1.
Taxonomy (biology)
–
Taxonomy is the science of defining groups of biological organisms on the basis of shared characteristics and giving names to those groups. The exact definition of taxonomy varies from source to source, but the core of the remains, the conception, naming. There is some disagreement as to whether biological nomenclature is considered a part of taxonomy, the broadest meaning of taxonomy is used here. The word taxonomy was introduced in 1813 by Candolle, in his Théorie élémentaire de la botanique, the term alpha taxonomy is primarily used today to refer to the discipline of finding, describing, and naming taxa, particularly species. In earlier literature, the term had a different meaning, referring to morphological taxonomy, ideals can, it may be said, never be completely realized. They have, however, a value of acting as permanent stimulants. Some of us please ourselves by thinking we are now groping in a beta taxonomy, turrill thus explicitly excludes from alpha taxonomy various areas of study that he includes within taxonomy as a whole, such as ecology, physiology, genetics, and cytology. He further excludes phylogenetic reconstruction from alpha taxonomy, thus, Ernst Mayr in 1968 defined beta taxonomy as the classification of ranks higher than species. This activity is what the term denotes, it is also referred to as beta taxonomy. How species should be defined in a group of organisms gives rise to practical and theoretical problems that are referred to as the species problem. The scientific work of deciding how to define species has been called microtaxonomy, by extension, macrotaxonomy is the study of groups at higher taxonomic ranks, from subgenus and above only, than species. While some descriptions of taxonomic history attempt to date taxonomy to ancient civilizations, earlier works were primarily descriptive, and focused on plants that were useful in agriculture or medicine. There are a number of stages in scientific thinking. Early taxonomy was based on criteria, the so-called artificial systems. Later came systems based on a complete consideration of the characteristics of taxa, referred to as natural systems, such as those of de Jussieu, de Candolle and Bentham. The publication of Charles Darwins Origin of Species led to new ways of thinking about classification based on evolutionary relationships and this was the concept of phyletic systems, from 1883 onwards. This approach was typified by those of Eichler and Engler, the advent of molecular genetics and statistical methodology allowed the creation of the modern era of phylogenetic systems based on cladistics, rather than morphology alone. Taxonomy has been called the worlds oldest profession, and naming and classifying our surroundings has likely been taking place as long as mankind has been able to communicate
Taxonomy (biology)
–
Title page of
Systema Naturae, Leiden, 1735
Taxonomy (biology)
–
Evolution of the
vertebrates at class level, width of spindles indicating number of families. Spindle diagrams are typical for
Evolutionary taxonomy
Taxonomy (biology)
–
The same relationship, expressed as a
cladogram typical for
cladistics
Taxonomy (biology)
–
Type specimen for
Nepenthes smilesii, a tropical
pitcher plant.
2.
Plant
–
Plants are mainly multicellular, predominantly photosynthetic eukaryotes of the kingdom Plantae. The term is generally limited to the green plants, which form an unranked clade Viridiplantae. This includes the plants, conifers and other gymnosperms, ferns, clubmosses, hornworts, liverworts, mosses and the green algae. Green plants have cell walls containing cellulose and obtain most of their energy from sunlight via photosynthesis by primary chloroplasts and their chloroplasts contain chlorophylls a and b, which gives them their green color. Some plants are parasitic and have lost the ability to produce amounts of chlorophyll or to photosynthesize. Plants are characterized by sexual reproduction and alternation of generations, although reproduction is also common. There are about 300–315 thousand species of plants, of which the great majority, green plants provide most of the worlds molecular oxygen and are the basis of most of Earths ecologies, especially on land. Plants that produce grains, fruits and vegetables form humankinds basic foodstuffs, Plants play many roles in culture. They are used as ornaments and, until recently and in variety, they have served as the source of most medicines. The scientific study of plants is known as botany, a branch of biology, Plants are one of the two groups into which all living things were traditionally divided, the other is animals. The division goes back at least as far as Aristotle, who distinguished between plants, which generally do not move, and animals, which often are mobile to catch their food. Much later, when Linnaeus created the basis of the system of scientific classification. Since then, it has become clear that the plant kingdom as originally defined included several unrelated groups, however, these organisms are still often considered plants, particularly in popular contexts. When the name Plantae or plant is applied to a group of organisms or taxon. The evolutionary history of plants is not yet settled. Those which have been called plants are in bold, the way in which the groups of green algae are combined and named varies considerably between authors. Algae comprise several different groups of organisms which produce energy through photosynthesis, most conspicuous among the algae are the seaweeds, multicellular algae that may roughly resemble land plants, but are classified among the brown, red and green algae. Each of these groups also includes various microscopic and single-celled organisms
Plant
–
Green algae from
Ernst Haeckel 's
Kunstformen der Natur, 1904.
Plant
–
Had'n
Plant
–
Dicksonia antarctica, a species of
tree fern
Plant
–
A petrified log in
Petrified Forest National Park.
3.
Flowering plant
–
The flowering plants, also known as Angiospermae or Magnoliophyta, are the most diverse group of land plants, with 416 families, approx. 13,164 known genera and a total of c.295,383 known species, etymologically, angiosperm means a plant that produces seeds within an enclosure, in other words, a fruiting plant. The term angiosperm comes from the Greek composite word meaning enclosed seeds, the ancestors of flowering plants diverged from gymnosperms in the Triassic Period, during the range 245 to 202 million years ago, and the first flowering plants are known from 160 mya. They diversified extensively during the Lower Cretaceous, became widespread by 120 mya, angiosperms differ from other seed plants in several ways, described in the table. These distinguishing characteristics taken together have made the angiosperms the most diverse and numerous land plants, the amount and complexity of tissue-formation in flowering plants exceeds that of gymnosperms. The vascular bundles of the stem are arranged such that the xylem and phloem form concentric rings, in the dicotyledons, the bundles in the very young stem are arranged in an open ring, separating a central pith from an outer cortex. In each bundle, separating the xylem and phloem, is a layer of meristem or active formative tissue known as cambium, the soft phloem becomes crushed, but the hard wood persists and forms the bulk of the stem and branches of the woody perennial. Among the monocotyledons, the bundles are more numerous in the stem and are scattered through the ground tissue. They contain no cambium and once formed the stem increases in diameter only in exceptional cases, the characteristic feature of angiosperms is the flower. Flowers show remarkable variation in form and elaboration, and provide the most trustworthy external characteristics for establishing relationships among angiosperm species, the function of the flower is to ensure fertilization of the ovule and development of fruit containing seeds. The floral apparatus may arise terminally on a shoot or from the axil of a leaf, occasionally, as in violets, a flower arises singly in the axil of an ordinary foliage-leaf. There are two kinds of cells produced by flowers. Microspores, which divide to become pollen grains, are the male cells and are borne in the stamens. The female cells called megaspores, which divide to become the egg cell, are contained in the ovule. The flower may consist only of parts, as in willow. Usually, other structures are present and serve to protect the sporophylls, the individual members of these surrounding structures are known as sepals and petals. The outer series is usually green and leaf-like, and functions to protect the rest of the flower, the inner series is, in general, white or brightly colored, and is more delicate in structure. It functions to attract insect or bird pollinators, attraction is effected by color, scent, and nectar, which may be secreted in some part of the flower
Flowering plant
Flowering plant
–
Bud of a pink
rose
Flowering plant
–
Flowers of
Malus sylvestris (crab apple)
Flowering plant
–
Flowers and leaves of
Oxalis pes-caprae (Bermuda buttercup)
4.
Monocotyledon
–
Monocotyledons, commonly referred to as monocots, are flowering plants whose seeds typically contain only one embryonic leaf, or cotyledon. However, molecular research has shown that while the monocots form a monophyletic group or clade. Monocots have almost always recognized as a group, but with various taxonomic ranks. The APG III system of 2009 recognises a clade called monocots, the monocots include about 60,000 species. The largest family in this group by number of species are the orchids, about half as many species belong to the true grasses, which are economically the most important family of monocots. In agriculture the majority of the biomass produced comes from monocots and these include not only major grains, but also forage grasses, sugar cane, and the bamboos. Other economically important monocot crops include various palms, bananas, gingers and their relatives, turmeric and cardamom, asparagus and the onions and garlic family. Additionally most of the bulbs, plants cultivated for their blooms, such as lilies, daffodils, irises, amaryllis, cannas, bluebells. The monocots or monocotyledons have, as the name implies, a single cotyledon, or embryonic leaf, from a diagnostic point of view the number of cotyledons is neither a particularly useful characteristic, nor is it completely reliable. Nevertheless, monocots are sufficiently distinctive that there has rarely been disagreement as to membership of this group, however, morphological features that reliably characterise major clades are rare. Thus monocots are distinguishable from other angiosperms both in terms of their uniformity and diversity, although largely herbaceous, some arboraceous monocots reach great height, length and mass. The latter include agaves, palms, pandans, and bamboos and this creates challenges in water transport that monocots deal with in various ways. Some such as species of Yucca develop anomalous secondary growth, while palm trees, the axis undergoes primary thickening, that progresses from internode to internode, resulting in a typical inverted conical shape of the basal primary axis. The limited conductivity also contributes to limited branching of the stems, despite these limitations a wide variety of adaptive growth forms has resulted from epiphytic orchids and bromeliads to submarine Alismatales and mycotrophic Burmanniaceae and Triuridaceae. Other monocots, particularly Poales have adopted a life form. Leaves The cotyledon, the primordial Angiosperm leaf consists of a proximal leaf base or hypophyll, in moncots the hypophyll tends to be the dominant part in contrast to other angiosperms. Mature monocot leaves are narrow and linear, forming a sheathing around the stem at its base. There is usually only one leaf per node because the leaf base encompasses more than half the circumference, the evolution of this monocot characteristic has been attributed to developmental differences in early zonal differentiation rather than meristem activity
Monocotyledon
Monocotyledon
–
Comparison of a monocot and dicot sprouting. Note that the visible part of the monocot plant (left) is actually the first true leaf produced from the
meristem; the cotyledon itself remains within the seed.
Monocotyledon
–
Allium crenulatum, an onion, with a typical monocot
perianth and parallel leaf venation
Monocotyledon
–
Slice of onion, showing parallel veins in cross section
5.
Asparagales
–
Asparagales is an order of plants in modern classification systems such as the Angiosperm Phylogeny Group and the Angiosperm Phylogeny Web. The order takes its name from the type family Asparagaceae and is placed in the monocots amongst the lilioid monocots, the order has only recently been recognized in classification systems. It was first put forward by Huber in 1977 and later taken up in the Dahlgren system of 1985 and then the APG in 1998,2003 and 2009. Before this, many of its families were assigned to the old order Liliales, DNA sequence analysis indicated that many of the taxa previously included in Liliales should actually be redistributed over three orders, Liliales, Asparagales and Dioscoreales. The boundaries of the Asparagales and of its families have undergone a series of changes in recent years, future research may lead to further changes and ultimately greater stability. In the APG circumscription, Asparagales is the largest order of monocots with 14 families,1,122 genera, the order is clearly circumscribed on the basis of molecular phylogenetics, but is difficult to define morphologically, since its members are structurally diverse. Most species of Asparagales are herbaceous perennials, although some are climbers, the order also contains many geophytes. According to telomere sequence, at least two evolutionary switch-points happened within the order, basal sequence is formed by TTTAGGG like in majority of higher plants. Basal motif was changed to vertebrate-like TTAGGG and finally the most divergent motif CTCGGTTATGGG appears in Allium, one of the defining characteristics of the order is the presence of phytomelanin, a black pigment present in the seed coat, creating a dark crust. Phytomelanin is found in most families of the Asparagales, the leaves of almost all species form a tight rosette, either at the base of the plant or at the end of the stem, but occasionally along the stem. The flowers are not particularly distinctive, being lily type, with six tepals, from an economic point of view, the order Asparagales is second in importance within the monocots to the order Poales. Species are used as food and flavourings, as cut flowers, and as garden ornamentals. Thus although most species in the order are herbaceous, some no more than 15 cm high, there are a number of climbers, as well as several genera forming trees, succulent genera occur in several families. Almost all species have a cluster of leaves, either at the base of the plant or at the end of a more-or-less woody stem as with Yucca. In some cases the leaves are produced along the stem, the flowers are in the main not particularly distinctive, being of a general lily type, with six tepals, either free or fused from the base and up to six stamina. They are frequently clustered at the end of the plant stem and they are generally geophytes, but with linear leaves, and a lack of fine reticular venation. The seeds characteristically have the external epidermis either obliterated, or if present, have a layer of black carbonaceous phytomelanin in species with dry fruits. The inner part of the coat is generally collapsed, in contrast to Liliales whose seeds have a well developed outer epidermis, lack phytomelanin
Asparagales
Asparagales
–
Seeds of
Hippeastrum with dark phytomelan-containing coat
Asparagales
–
Tree-like
habit created by secondary thickening in
Nolina recurvata
Asparagales
–
Amaryllidaceae: Narcisseae -
Pancratium maritimum Linn. John Lindley, Vegetable Kingdom 1846
6.
Amaryllidaceae
–
The Amaryllidaceae are a family of herbaceous, mainly perennial and bulbous flowering plants in the monocot order Asparagales. The family takes its name from the genus Amaryllis and is known as the amaryllis family. The leaves are linear, and the flowers are usually bisexual and symmetrical. The petals and sepals are undifferentiated as tepals, which may be fused at the base into a floral tube, allyl sulfide compounds produce the characteristic odour of the onion subfamily. The family, which was created in 1805, now contains about 1600 species, divided into about 75 genera,17 tribes. Over time, it has seen much reorganisation and at times was combined with the related Liliaceae. Since 2009, a broad view has prevailed based on phylogenetics. The family is found in tropical to subtropical areas of the world and includes many garden plants. The Amaryllidaceae are mainly terrestrial flowering plants that are herbaceous or succulent geophytes that are perennial, most genera grow from bulbs, but a few such as Agapanthus, Clivia and Scadoxus develop from rhizomes. The leaves are simple rather fleshy and two-ranked with parallel veins, leaf shape may be linear, strap like, oblong, elliptic, lanceolate or filiform. The leaves which are grouped at the base or arranged alternatively on the stem may be sessile or petiolate. The perianth consists of six undifferentiated tepals arranged in two whorls of three, the tepals are similar in shape and size, and may be free from each other or fused at the base to form a floral tube. In some genera, such as Narcissus, this may be surmounted by cup or trumpet shaped projection and this may be reduced to a mere disc in some species. The position of the ovary varies by subfamily, the Agapanthoideae and Allioideae have superior ovaries, the six stamens are arranged in two whorls of three, occasionally more as in Gethyllis. The fruit is dry and capsule-shaped, or fleshy and berry-like, the Allioideae produce allyl sulfide compounds which give them their characteristic smell. The name Amaryllis had been applied to a number of plants over the course of history. Hexandria monogynia has come to be treated as either liliaceous or amaryllidaceaous over time. From 1763, when Adanson conceived of these genera as Liliaceae it was included in family, placing Amaryllis in Section VII, Narcissi. of his scheme. With de Jussieu came the establishment of organising genera into families in 1789
Amaryllidaceae
–
Amaryllidaceae
Amaryllidaceae
–
Allium cepa bulbs with
roots
Amaryllidaceae
–
Rhizome of Agapanthus
Amaryllidaceae
–
Narcissus shoots emerging, with sheathed
leaves
7.
Allioideae
–
Allioideae is a subfamily of monocot flowering plants in the family Amaryllidaceae, order Asparagales. It was formerly treated as a family, Alliaceae. The subfamily name is derived from the name of the type genus. It is composed of approximately eighteen genera, the subfamily contains both well known garden plants, but also weeds, such as Nothoscordum. When Linnaeus formerly described the type genus Allium in his Species Plantarum in 1753 and he placed Allium in a grouping he referred to as Hexandria monogynia containing 51 genera in all. In 1763, Adanson, who proposed the concept of families of plants, included Allium and related genera as a grouping within Liliaceae as Section IV, Les Oignons, de Jussieu is officially recognised as the first formal establishment of the suprageneric grouping into families in 1789. In this system Allium was one of fourteen genera in Ordo VI, Asphodeles, in 1786 the Allioideae were first described by their type genus as Alliaceae by Batsch. In 1797, after the appearance of the Jussieu system, this was validated by Borkhausen, jean Henri Jaume Saint-Hilaire, who developed the concept of Amaryllidaceae, continued Jussieus treatment of Allium under Asphodeli. He placed Allium in an unnamed section of Asphodeli defined as Fleurs en ombelle. Subsequently, de Candolle reverted the name back to Liliaceae from Asphodeli. He divided the Liliaceae into a series of Ordres, and the second ordre was named Asphodèles, based on Jussieus family of that name, the term Alliaceae then reappeared in its subfamilial form, Allieae, in Dumortiers Florula Belgica, with six genera. The Alliaceae have been treated as Allieae within the Liliaceae family by most authorities since, in 1830, Lindley, the first English systematist, considered Alliaceae to be part of the Asphodeleae tribe, separating them from the Liliaceae as he understood them. He absorbed Asphodeleae into this family and created a suborder of Scilleae, by the time of the next major British classification, that of Bentham and Hooker, the Allieae had become one of twenty tribes within Liliaceae. The Allieae included Lindleys Gilliesieae as one of its four subtribes, similarly in the German language literature, Englers classification treated Allieae and Gilliesiae as tribes of subfamily Allioideae, within Liliaceae. In the early twentieth century there were doubts expressed about the placement of the genera within Liliaceae. Lotsy was the first taxonomist to propose separating them, and in his system he describes Alliaceae and Gilliesiaceae as new and this approach was later adopted by a number of other authorities, such as Dahlgren and Rahn. In 1926 John Hutchinson moved the Allieae and Gilliesieae tribes from Liliaceae to the Amaryllidaceae, thus Allieae were variously treated as either Liliaceae, Amaryllidaceae or Alliaceae. They divided Alliaceae into three subfamilies, Agapanthoideae, Allioideae, and Gilliesioideae, Allioideae contained two tribes, Brodiaeeae and a broadly defined Allieae, which they considered distinct enough to alternatively consider as subfamilies in their own right
Allioideae
–
Allioideae
Allioideae
–
Adanson 's description of Cepae 1763
Allioideae
–
Batsch 1786
8.
Allium
–
Allium is a genus of monocotyledonous flowering plants that includes the cultivated onion, garlic, scallion, shallot and leek as well as chives and hundreds of other wild species. The generic name Allium is the Latin word for garlic, some sources refer to Greek αλεω by reason of the smell of garlic. The cooking and consumption of parts of the plants is due to the variety of flavours. The inclusion of a species to the genus Allium is taxonomically difficult, estimates of the number of species have been as low as 260, and as high as 979, but are most likely about 800–850. The type species for the genus is Allium sativum, Allium species occur in temperate climates of the Northern Hemisphere, except for a few species occurring in Chile, Brazil, and tropical Africa. They vary in height between 5 cm and 150 cm, the flowers form an umbel at the top of a leafless stalk. The bulbs vary in size between species, from small to rather large, some species develop thickened leaf-bases rather than forming bulbs as such. Plants of the Allium genus produce chemical compounds that give them a characteristic onion or garlic taste, many are used as food plants, though not all members of the genus are equally flavorous. In most cases, both bulb and leaves are edible and the taste may be strong or weak, depending on the species, in the rare occurrence of sulfur-free growth conditions, all Allium species lose their usual pungency altogether. In the APG III classification system, Allium is placed in the family Amaryllidaceae, in some of the older classification systems, Allium was placed in Liliaceae. Molecular phylogenetic studies have shown this circumscription of Liliaceae is not monophyletic, Allium is one of about fifty-seven genera of flowering plants with more than 500 species. It is by far the largest genus in the Amaryllidaceae, the genus Allium is characterised by herbaceous geophyte perennials with true bulbs, some of which are borne on rhizomes and an onion or garlic odor and flavor. A small number of species have tuberous roots, the bulbs outer coats are commonly brown or grey, with a smooth texture, and are fibrous, or with cellular reticulation. The inner coats of the bulbs are membranous, many alliums have basal leaves that commonly wither away from the tips downward before or while the plants flower, but some species have persistent foliage. Plants produce from one to 12 leaves, most species having linear, the leaf blades are straight or variously coiled, but some species have broad leaves, including A. victorialis and A. tricoccum. The leaves are sessile, and very rarely narrowed into a petiole, the flowers, which are produced on scapes are erect or in some species pendent, having six petal-like tepals produced in two whorls. The flowers have one style and six stamens, the anthers. The ovaries are superior, and three-lobed with three locules, the fruits are capsules that open longitudinally along the capsule wall between the partitions of the locule
Allium
–
Allium
Allium
–
Allium flavum (yellow) and
Allium carinatum (purple)
Allium
–
Capsule of
Allium oreophilum.
Allium
–
Allium ursinum (wild garlic) in a
Bristol,
England, woodland
9.
Binomial nomenclature
–
Such a name is called a binomial name, a binomen, binominal name or a scientific name, more informally it is also called a Latin name. The first part of the name identifies the genus to which the species belongs, for example, humans belong to the genus Homo and within this genus to the species Homo sapiens. The formal introduction of system of naming species is credited to Carl Linnaeus. But Gaspard Bauhin, in as early as 1623, had introduced in his book Pinax theatri botanici many names of genera that were adopted by Linnaeus. Although the general principles underlying binomial nomenclature are common to these two codes, there are differences, both in the terminology they use and in their precise rules. Similarly, both parts are italicized when a binomial name occurs in normal text, thus the binomial name of the annual phlox is now written as Phlox drummondii. In scientific works, the authority for a name is usually given, at least when it is first mentioned. In zoology Patella vulgata Linnaeus,1758, the original name given by Linnaeus was Fringilla domestica, the parentheses indicate that the species is now considered to belong in a different genus. The ICZN does not require that the name of the person who changed the genus be given, nor the date on which the change was made, in botany Amaranthus retroflexus L. – L. is the standard abbreviation used in botany for Linnaeus. – Linnaeus first named this bluebell species Scilla italica, Rothmaler transferred it to the genus Hyacinthoides, the ICN does not require that the dates of either publication be specified. Prior to the adoption of the binomial system of naming species. Together they formed a system of polynomial nomenclature and these names had two separate functions. First, to designate or label the species, and second, to be a diagnosis or description, such polynomial names may sometimes look like binomials, but are significantly different. For example, Gerards herbal describes various kinds of spiderwort, The first is called Phalangium ramosum, Branched Spiderwort, is aptly termed Phalangium Ephemerum Virginianum, Soon-Fading Spiderwort of Virginia. The Latin phrases are short descriptions, rather than identifying labels, the Bauhins, in particular Caspar Bauhin, took some important steps towards the binomial system, by pruning the Latin descriptions, in many cases to two words. The adoption by biologists of a system of binomial nomenclature is due to Swedish botanist and physician Carl von Linné. It was in his 1753 Species Plantarum that he first began using a one-word trivial name together with a generic name in a system of binomial nomenclature. This trivial name is what is now known as an epithet or specific name
Binomial nomenclature
–
Carl Linnaeus (1707–1778), a Swedish botanist, invented the modern system of binomial nomenclature.
10.
Carl Linnaeus
–
Carl Linnaeus, also known after his ennoblement as Carl von Linné, was a Swedish botanist, physician, and zoologist, who formalised the modern system of naming organisms called binomial nomenclature. He is known by the father of modern taxonomy. Many of his writings were in Latin, and his name is rendered in Latin as Carolus Linnæus, Linnaeus was born in the countryside of Småland, in southern Sweden. He received most of his education at Uppsala University. He lived abroad between 1735 and 1738, where he studied and also published a first edition of his Systema Naturae in the Netherlands and he then returned to Sweden, where he became professor of medicine and botany at Uppsala. In the 1740s, he was sent on journeys through Sweden to find and classify plants. In the 1750s and 1760s, he continued to collect and classify animals, plants, and minerals, at the time of his death, he was one of the most acclaimed scientists in Europe. The philosopher Jean-Jacques Rousseau sent him the message, Tell him I know no man on earth. The German writer Johann Wolfgang von Goethe wrote, With the exception of Shakespeare and Spinoza, Swedish author August Strindberg wrote, Linnaeus was in reality a poet who happened to become a naturalist. Among other compliments, Linnaeus has been called Princeps botanicorum, The Pliny of the North and he is also considered as one of the founders of modern ecology. In botany, the abbreviation used to indicate Linnaeus as the authority for species names is L. In older publications, sometimes the abbreviation Linn. is found, Linnæus was born in the village of Råshult in Småland, Sweden, on 23 May 1707. He was the first child of Nicolaus Ingemarsson and Christina Brodersonia and his siblings were Anna Maria Linnæa, Sofia Juliana Linnæa, Samuel Linnæus, and Emerentia Linnæa. One of a line of peasants and priests, Nils was an amateur botanist, a Lutheran minister. Christina was the daughter of the rector of Stenbrohult, Samuel Brodersonius, a year after Linnæus birth, his grandfather Samuel Brodersonius died, and his father Nils became the rector of Stenbrohult. The family moved into the rectory from the curates house, even in his early years, Linnæus seemed to have a liking for plants, flowers in particular. Whenever he was upset, he was given a flower, which calmed him. Nils spent much time in his garden and often showed flowers to Linnaeus, soon Linnæus was given his own patch of earth where he could grow plants
Carl Linnaeus
–
Carl von Linné,
Alexander Roslin, 1775. Oil painting in the portrait collection at
Gripsholm Castle
Carl Linnaeus
–
The
coat of arms of Carl von Linné.
Carl Linnaeus
–
Birthplace of Linnæus at
Råshult
Carl Linnaeus
–
Statue of Linnaeus as a University student in
Lund
11.
Synonym (taxonomy)
–
For example, Linnaeus was the first to give a scientific name to the Norway spruce, which he called Pinus abies. This name is no longer in use, it is now a synonym of the current scientific name which is Picea abies, unlike synonyms in other contexts, in taxonomy a synonym is not interchangeable with the name of which it is a synonym. In taxonomy, synonyms are not equals, but have a different status, for any taxon with a particular circumscription, position, and rank, only one scientific name is considered to be the correct one at any given time. A synonym cannot exist in isolation, it is always an alternative to a different scientific name, given that the correct name of a taxon depends on the taxonomic viewpoint used a name that is one taxonomists synonym may be another taxonomists correct name. Synonyms may arise whenever the same taxon is described and named more than once, independently. They may also arise when existing taxa are changed, as when two taxa are joined to one, a species is moved to a different genus. To the general user of scientific names, in such as agriculture, horticulture, ecology, general science. A synonym is a name that was used as the correct scientific name but which has been displaced by another scientific name. Thus Oxford Dictionaries Online defines the term as a name which has the same application as another. In handbooks and general texts, it is useful to have mentioned as such after the current scientific name. Synonyms used in this way may not always meet the strict definitions of the synonym in the formal rules of nomenclature which govern scientific names. Changes of scientific name have two causes, they may be taxonomic or nomenclatural, a name change may be caused by changes in the circumscription, position or rank of a taxon, representing a change in taxonomic, scientific insight. A name change may be due to purely nomenclatural reasons, that is, based on the rules of nomenclature, the earliest such name is called the senior synonym, while the later name is the junior synonym. One basic principle of zoological nomenclature is that the earliest correctly published name, synonyms are important because if the earliest name cannot be used, then the next available junior synonym must be used for the taxon. Objective synonyms refer to taxa with the type and same rank. For example, John Edward Gray published the name Antilocapra anteflexa in 1855 for a species of pronghorn, however, it is now commonly accepted that his specimen was an unusual individual of the species Antilocapra americana published by George Ord in 1815. Ords name thus takes precedence, with Antilocapra anteflexa being a subjective synonym. Objective synonyms are common at the level of genera, because for various reasons two genera may contain the type species, these are objective synonyms
Synonym (taxonomy)
–
The
Latin Caudata and
Greek Urodela both mean "tailed" and have been used as a scientific name at the rank of order for the
salamanders (as opposed to the tail-less
frogs). Thus they are synonyms.
Synonym (taxonomy)
–
The common dandelion
Taraxacum officinale sensu lato is an extremely widespread group of
apomictic lineages, and some scientists apply the "biological species concept" to divide it into many distinct species; other scientists regard all the names for those independent species as synonyms.
12.
Vegetable
–
In everyday usage, a vegetable is any part of a plant that is consumed by humans as food as part of a meal. The term vegetable is somewhat arbitrary, and largely defined through culinary and it normally excludes other food derived from plants such as fruits, nuts, and cereal grains, but includes seeds such as pulses. The original meaning of the vegetable, still used in biology, was to describe all types of plant, as in the terms vegetable kingdom. At first, plants which grew locally would have been cultivated, nowadays, most vegetables are grown all over the world as climate permits, and crops may be cultivated in protected environments in less suitable locations. China is the largest producer of vegetables and global trade in agricultural products allows consumers to purchase vegetables grown in faraway countries, the scale of production varies from subsistence farmers supplying the needs of their family for food, to agribusinesses with vast acreages of single-product crops. Depending on the type of vegetable concerned, harvesting the crop is followed by grading, storing, processing, and marketing. Vegetables can be either raw or cooked and play an important role in human nutrition, being mostly low in fat and carbohydrates. Many nutritionists encourage people to consume plenty of fruit and vegetables, the word vegetable was first recorded in English in the early 15th century. It comes from Old French, and was applied to all plants. It derives from Medieval Latin vegetabilis growing, flourishing, a change from a Late Latin meaning to be enlivening, quickening. The meaning of vegetable as a plant grown for food was not established until the 18th century, in 1767, the word was specifically used to mean a plant cultivated for food, an edible herb or root. The year 1955 saw the first use of the shortened, slang term veggie, the broadest definition is the words use adjectivally to mean matter of plant origin to distinguish it from animal, meaning matter of animal origin. More specifically, a vegetable may be defined as any plant, part of which is used for food, a secondary meaning then being the edible part of such a plant. A more precise definition is any plant part consumed for food that is not a fruit or seed, falling outside these definitions are edible fungi and edible seaweed which, although not parts of plants, are often treated as vegetables. In everyday language, the fruit and vegetable are mutually exclusive. Fruit has a precise meaning, being a part that developed from the ovary of a flowering plant. This is considerably different from the words culinary meaning, while peaches, plums, and oranges are fruit in both senses, many items commonly called vegetables, such as eggplants, bell peppers, and tomatoes, are botanically fruits. The question of whether the tomato is a fruit or a vegetable found its way into the United States Supreme Court in 1893
Vegetable
–
Vegetables in a
market in the
Philippines
Vegetable
–
Domestic vegetable garden in the United Kingdom
Vegetable
–
cabbage Brassica oleracea
Vegetable
–
turnip Brassica rapa
13.
Garlic
–
Garlic is a species in the onion genus, Allium. Its close relatives include the onion, shallot, leek, chive, with a history of several thousand years of human consumption and use, garlic is native to the region between the Mediterranean and China, and has long been a common seasoning worldwide. It was known to Ancient Egyptians, and has used both as a food flavoring and as a traditional medicine. Allium sativum is a bulbous plant and it grows up to 1.2 m in height. Its hardiness is USDA Zone 8 and it is pollinated by bees and other insects. Allium sativum grows in the wild in areas where it has become naturalized, the wild garlic, crow garlic, and field garlic of Britain are members of the species Allium ursinum, Allium vineale, and Allium oleraceum, respectively. In North America, Allium vineale and Allium canadense, known as garlic or wild garlic. So-called elephant garlic is actually a wild leek, and not a true garlic, single clove garlic originated in the Yunnan province of China. A. sativum var. ophioscorodon Döll, called Ophioscorodon, or hard-necked garlic, includes porcelain garlics, rocambole garlic and it is sometimes considered to be a separate species, Allium ophioscorodon G. Don. A. sativum var. sativum, or soft-necked garlic, includes artichoke garlic, silverskin garlic, Garlic is easy to grow and can be grown year-round in mild climates. While sexual propagation of garlic is possible, nearly all of the garlic in cultivation is propagated asexually, in colder climates, cloves are planted in the autumn, about six weeks before the soil freezes, and harvested in late spring or early summer. The cloves must be planted deep enough to prevent freeze/thaw, which causes mold or white rot, Garlic plants can be grown closely together, leaving enough space for the bulbs to mature, and are easily grown in containers of sufficient depth. Garlic does well in loose, dry, well-drained soils in sunny locations, when selecting garlic for planting, it is important to pick large bulbs from which to separate cloves. Large cloves, along with proper spacing in the planting bed, Garlic plants prefer to grow in a soil with a high organic material content, but are capable of growing in a wide range of soil conditions and pH levels. There are different varieties or subspecies of garlic, most notably hardneck garlic, the latitude where the garlic is grown affects the choice of type, as garlic can be day-length sensitive. Hardneck garlic is grown in cooler climates and produces relatively large cloves, whereas softneck garlic is generally grown closer to the equator and produces small. Garlic scapes are removed to all the garlics energy into bulb growth. The scapes can be eaten raw or cooked, Garlic plants are usually hardy and not affected by many pests or diseases
Garlic
–
Garlic
Garlic
–
Flower head
Garlic
–
Italian garlic PDO (Aglio Bianco Polesano)
Garlic
–
Bulbils
14.
Shallot
–
The shallot is a type of onion, specifically a botanical variety of the species Allium cepa. The shallot was formerly classified as a species, A. ascalonicum. Shallots probably originated in Central or Southwest Asia, travelling there to India. The name shallot comes from Ashkelon, an ancient Canaanite city, Indian names for shallots include kaanda or gandana or pyaaz, gundhun, cheriya ulli or chuvanna ulli, ଉଲ୍ଲି ପିଆଜ, chinna ullipayi and chinna vengayam. In the Kashmiri language, shallots are called praan, in Nepal, shallots are called chyapi. In Southeastern Asia, shallots are called bawang merah kecil in Malay, brambang in Java, sibuyas bombay in the Philippines, and hom in Thai. In Cambodian, shallots are called katem kror hom, where katem or ktem is a species of onion, the name shallot is also used for the Persian shallot, from the Zagros Mountains in Iran and Iraq. The term shallot is used for the French red shallot and the French gray shallot or griselle. The name shallot is used for a scallion in New Orleans while the term French shallot refers to the plant referred to on this page. The term eschalot, derived from the French word échalote, can also be used to refer to the shallot, the usage of green onion for shallot is found among English-speaking people in Quebec, but when shallot is used, stress is on the second syllable. Like garlic, shallots are formed in clusters of offsets with a composed of multiple cloves. The skin colour of shallots can vary from brown to gray to rose red. Shallots are extensively cultivated for culinary uses, propagated by offsets, in some regions, the offsets are usually planted in autumn. In some other regions, the suggested planting time for the crop is early spring. In planting, the tops of the bulbs should be kept a little ground. They come to maturity in summer, although fresh shallots can now be found year-round in supermarkets, shallots should not be planted on ground recently manured. In Africa, shallots are grown in the area around Anloga in southeastern Ghana, shallots are used in fresh cooking in addition to being pickled. Finely sliced, deep-fried shallots are used as a condiment in Asian cuisine, as a species of Allium, shallots taste somewhat like a common onion, but have a milder flavor
Shallot
–
Whole French red shallots
Shallot
–
Sliced and whole shallots
Shallot
–
Shallots are called "small onions" in South India and are used extensively in cooking there.
Shallot
–
Shallot plant (A. cepa var. aggregatum) growing in
Castelltallat, Spain
15.
Leek
–
The leek is a vegetable, a cultivar of Allium ampeloprasum, the broadleaf wild leek. The edible part of the plant is a bundle of leaf sheaths that is sometimes called a stem or stalk. Historically, many names were used for leeks, but they are now all treated as cultivars of A. ampeloprasum. The name leek developed from the Anglo-Saxon word leac, two closely related vegetables, elephant garlic and kurrat, are also cultivars of A. ampeloprasum, although different in their uses as food. The onion and garlic are also related, being other species of the genus Allium, rather than forming a tight bulb like the onion, the leek produces a long cylinder of bundled leaf sheaths that are generally blanched by pushing soil around them. They are often sold as small seedlings in flats that are started off early in greenhouses, once established in the garden, leeks are hardy, many varieties can be left in the ground during the winter to be harvested as needed. Leek cultivars may be treated as a cultivar group, e. g. as A. ampeloprasum Leek Group. Summer leek types are smaller than overwintering types, overwintering types are generally more strongly flavored. Cultivars include King Richard and Tadorna Blue, leeks are easy to grow from seed and tolerate standing in the field for an extended harvest, which takes place up to 6 months from planting. The soil in which it is grown has to be loose and drained well, leeks usually reach maturity in the autumn months. The thrips species Thrips tabaci is considered a leek pest and leeks can also get leek rust. Leeks can be bunched and harvested early when they are about the size of a finger or pencil, hilling leeks can produce better specimens. Leeks have a mild, onion-like taste, in its raw state, the vegetable is crunchy and firm. The edible portions of the leek are the base of the leaves, the light green parts. One of the most popular uses is for adding flavor to stock, the dark green portion is usually discarded because it has a tough texture, but it can be sautéed or added to stock. A few leaves are sometimes tied with twine and other herbs to form a bouquet garni, leeks are typically chopped into slices 5–10 mm thick. The slices have a tendency to fall apart, due to the structure of the leek. The different ways of preparing the vegetable are, Boiling turns it soft, frying leaves it crunchier and preserves the taste
Leek
–
Leek
Leek
–
Fresh leek sautéing
Leek
–
Still life with leeks by
Carl Schuch (
National Museum in
Warsaw)
Leek
–
Two blooming flower heads
16.
Chive
–
Chives is the common name of Allium schoenoprasum, an edible species of the Allium genus. A perennial plant, it is widespread in nature much of Europe, Asia. A. schoenoprasum is the species of Allium native to both the New and the Old Worlds. The name of the species derives from the Greek σχοίνος, skhoínos and πράσον and its English name, chives, derives from the French word cive, from cepa, the Latin word for onion. Chives are a commonly used herb and can be found in stores or grown in home gardens. In culinary use, the scapes and the unopened, immature flower buds are diced and used as an ingredient for fish, potatoes, soups, chives have insect-repelling properties that can be used in gardens to control pests. Chives are a bulb-forming herbaceous perennial plant, growing to 30–50 cm tall, the bulbs are slender, conical, 2–3 cm long and 1 cm broad, and grow in dense clusters from the roots. The scapes are hollow and tubular, up to 50 cm long and 2–3 mm across, with a texture, although, prior to the emergence of a flower. The leaves, which are shorter than the scapes, are hollow and tubular, or terete. The flowers are purple, and star-shaped with six petals, 1–2 cm wide, and produced in a dense inflorescence of 10-30 together, before opening. The seeds are produced in a small, three-valved capsule, maturing in summer, the herb flowers from April to May in the southern parts of its habitat zones and in June in the northern parts. Chives are the species of Allium native to both the New and the Old Worlds. Sometimes, the found in North America are classified as A. schoenoprasum var. sibiricum. One example was found in northern Maine growing solitary, instead of in clumps, although chives are repulsive to insects in general, due to their sulfur compounds, their flowers attract bees, and they are at times kept to increase desired insect life. Chives are grown for their scapes, which are used for purposes as a flavoring herb. Chives have a variety of culinary uses, such as in traditional dishes in France, Sweden. In his 1806 book Attempt at a Flora, Retzius describes how chives are used with pancakes, soups, fish and they are also an ingredient of the gräddfil sauce with the traditional herring dish served at Swedish midsummer celebrations. The flowers may also be used to garnish dishes, in Poland and Germany, chives are served with quark cheese
Chive
–
Chives Allium schoenoprasum
Chive
Chive
–
A clump of flowering chives
Chive
–
Flower with bud
17.
Allium chinense
–
It is known by these other names in other languages, in Japanese, ラッキョウ, also written as 辣韮, 辣韭, or 薤, in Chinese, Simplified/Traditional, 薤/薤 or 藠头/藠頭, in Vietnamese, củ kiệu. Allium chinense is native to China plus in areas where it is deliberately planted. It is naturalized in parts of Asia as well as in North America. Owing to its mild and fresh taste A. chinense is often pickled and served as a side dish in Japan and Vietnam. For example, in Japanese cuisine it is eaten with Japanese curry as a garnish, in Vietnam, pickled A. chinense is often served during Tết. Allium chinense is used as a medicine in tonics to help the intestines. Garlic chives Pickled onion Botanical drawing of Allium chinense at Tropicos. org Media related to Allium chinense at Wikimedia Commons
Allium chinense
–
Chinese onion Chinese scallion Japanese scallion Kiangsi scallion Oriental onion
Allium chinense
–
Onion cultivars
18.
Allium fistulosum
–
Allium fistulosum, commonly called bunching onion, green onion, Japanese bunching onion, scallion, spring onion, and Welsh onion, is a species of perennial onion. The species is similar in taste and odor to the related common onion, Allium cepa. The Welsh onion, however, does not develop bulbs, large varieties of the Welsh onion resemble the leek, such as the Japanese negi, whilst smaller varieties resemble chives. Many Welsh onions can multiply by forming perennial evergreen clumps, next to culinary use, it is also grown in a bunch as an ornamental plant. Historically, the Welsh onion was known as the cibol, in Cornwall, they are known as chibbles. A. fistulosum is not indigenous to Wales or particularly common in Welsh cuisine, other names that may be applied to this plant include green onion, salad onion, and spring onion. These names are ambiguous, as they may also be used to refer to any young green onion stalk, whether grown from Welsh onions, common onions, the Welsh onion is an ingredient in Asian cuisine, especially in East and Southeast Asia. It is particularly important in China, Japan, and Korea, hence the other English name for this plant, Japanese bunching onion. In the West, the Welsh onion is used as a scallion or salad onion. Known as escallion, the Welsh onion is an ingredient in Jamaican cuisine, in combination with thyme, scotch bonnet pepper, garlic, recipes with escallion sometimes suggest leek as a substitute in salads. Jamaican dried spice mixtures using escallion are available commercially, the Jamaican name is probably a variant of scallion, the term used loosely for the spring onion and various other plants in the genus Allium. Common onions were introduced to East Asia in the 19th century and it is used in miso soup, negimaki, among others, and it is widely sliced up and used as a garnish, such as on teriyaki or takoyaki. In Korea, Allium fistulosum along with Allium × wakegi is called pa, larger Allium fistulosum, looking similar to leek, is called daepa, while thinner early variety is called silpa. A similar scallion plant, Allium × wakegi is called jjokpa, both daepa and silpa are usually used as a spice, herb, or garnish in Korean cuisine. The white part of daepa is often used as the base for various broths and infused oil. Dishes paganghoe – a type of ganghoe, made by parboilling silpa, pajangajji – a type of jangajji, made by pickling chunked daepa with soy sauce-based pickling liquid. The pickling liquid can be made by boiling the mixture of soy sauce, water, kelp, dried red chilli, vinegar, and sugar. Pamandu – a type of mandu, made by slicing the white part of daepa, cutting open the end of it, the stuffing can be made by mixing seasoned ground beef, minced clam meat, minced whitefish flesh, and julienned radish that is salted and squizeed
Allium fistulosum
–
Welsh onion
Allium fistulosum
–
Allium fistulosum
Allium fistulosum
–
Welsh onion grown in Guizhou, China
Allium fistulosum
–
A. fistulosum –
MHNT
19.
Tree onion
–
Tree onions, topsetting onions, walking onions, or Egyptian onions, Allium × proliferum, are similar to common onions, but with a cluster of bulblets where a normal onion would have flowers. Genomic evidence has shown that they are a hybrid of the common onion. However, some sources may treat the tree onion as A. cepa var. proliferum or A. cepa Proliferum Group. It has been postulated that the name Egyptian onion is derived from tree onions being brought to Europe from the Indian subcontinent by the Romani people. The phenomenon of forming bulblets instead of flowers is seen in garlic and other alliums. The bulblets are usually marble-sized, between 0.5 cm to 3 cm in diameter, many tree onions are very strong flavoured, although some cultivars are relatively mild and sweet. The underground bulbs are particularly tough-skinned and pungent, and can be quite elongate, like leeks, young plants may be used as scallions in the spring, and the bulblets may be used in cooking similarly to regular onions, or preserved by pickling
Tree onion
–
Tree onion
Tree onion
–
Egyptian onions
Tree onion
Tree onion
–
Growing in a garden
20.
Allium canadense
–
The species is also cultivated in other regions as an ornamental and as a garden culinary herb. The plant is reportedly naturalized in Cuba. Allium canadense has an edible bulb covered with a skin of brown fibers. The plant also has strong, onion-like, odor, crow garlic is similar, but it has a strong garlic taste. The narrow, grass-like leaves originate near the base of the stem and these flowers may be partially or entirely replaced by bulblets. When present, the flowers are hermaphroditic and are pollinated by American bees and it typically flowers in the spring and early summer, from May to June. The bulblet-producing form is classified as A. canadense var. canadense and it was formerly collected from the wild to be eaten by Native Americans and by European settlers. People in the Western Cherokee Nation continue the tradition of picking and cooking wild onions in early spring. Various Native American tribes also used the plant for other purposes, for example, rubbing the plant on the body for protection from insect, lizard, scorpion and this plant can cause gastroenteritis in young children who ingest parts of this plant. Chronic ingestion of the bulbs reduces iodine uptake by the thyroid gland, no specific treatment is suggested other than to prevent dehydration. Livestock have also been poisoned by ingesting wild onions, and some have died, horses have developed hemolytic anemia from ingesting wild onion leaves
Allium canadense
–
Canada onion
Allium canadense
–
Onion cultivars
21.
Biennial plant
–
A biennial plant is a flowering plant that takes two years to complete its biological lifecycle. In the first year, the plant grows leaves, stems, usually the stem remains very short and the leaves are low to the ground, forming a rosette. Many biennials require a treatment, or vernalization, before they will flower. During the next spring or summer, the stem of the biennial plant elongates greatly and this typically makes biennial vegetables such as spinach, fennel and lettuce unusable as food. The plant then flowers, producing fruits and seeds before it finally dies, there are far fewer biennials than either perennial plants or annual plants. Under extreme climatic conditions, a plant may complete its life cycle rapidly. This is quite common in vegetable or flower seedlings that were vernalized before they were planted in the ground and this behavior leads to many normally biennial plants being treated as annuals in some areas. From a gardeners perspective, a status as annual, biennial. Biennials grown for flowers, fruits, or seeds need to be grown for two years, biennials that are grown for edible leaves or roots are grown for just one year. Plant breeders have produced annual cultivars of several biennials that will flower the first year from seed, for example, foxglove and stock
Biennial plant
–
Parsley is a common example of a biennial plant.
Biennial plant
–
The Sweet William Dwarf plant is a biennial plant
22.
Perennial plant
–
A perennial plant or simply perennial is a plant that lives for more than two years. The term is used to differentiate a plant from shorter-lived annuals and biennials. The term is widely used to distinguish plants with little or no woody growth from trees and shrubs. Tomato vines, for example, live several years in their natural habitat but are grown as annuals in temperate regions because they dont survive the winter. There is also a class of evergreen, or non-herbaceous, perennials, an intermediate class of plants is known as subshrubs, which retain a vestigial woody structure in winter, e. g. Penstemon. The local climate may dictate whether plants are treated as shrubs or perennials, for instance, many varieties of Fuchsia are shrubs in warm regions, but in colder temperate climates may be cut to the ground every year as a result of winter frosts. The symbol for a plant, based on Species Plantarum by Linnaeus, is. Perennial plants can be short-lived or they can be long-lived, as are some plants like trees. They include an assortment of plant groups from ferns and liverworts to the highly diverse flowering plants like orchids. Plants that flower and fruit only once and then die are termed monocarpic or semelparous, however, most perennials are polycarpic, flowering over many seasons in their lifetime. Perennials typically grow structures that allow them to adapt to living one year to the next through a form of vegetative reproduction rather than seeding. These structures include bulbs, tubers, woody crowns, rhizomes plus others and they might have specialized stems or crowns that allow them to survive periods of dormancy over cold or dry seasons during the year. Many perennials have developed specialized features that allow them to extreme climatic. Some have adapted to hot and dry conditions or cold temperatures. Those plants tend to invest a lot of resource into their adaptations and often do not flower, Many perennials produce relatively large seeds, which can have an advantage, with larger seedlings produced after germination that can better compete with other plants. Some annuals produce many seeds per plant in one season, while some perennials are not under the same pressure to produce large numbers of seeds. In warmer and more favorable climates, perennials grow continuously, in seasonal climates, their growth is limited to the growing season. In some species, perennials retain their foliage all year round, other plants are deciduous perennials, for example, in temperate regions a perennial plant may grow and bloom during the warm part of the year, with the foliage dying back in the winter
Perennial plant
–
Common chicory,
Cichorium intybus, is a herbaceous perennial plant
Perennial plant
–
Dahlia plants are perennial.
Perennial plant
–
Switchgrass is a deep-rooted perennial. These roots are more than 3 meters long.
Perennial plant
23.
Annual plant
–
An annual plant is a plant that completes its life cycle, from germination to the production of seed, within one year, and then dies. Summer annuals germinate during spring or early summer and mature by autumn of the same year, winter annuals germinate during the autumn and mature during the spring or summer of the following calendar year. One seed-to-seed life cycle for an annual can occur in as little as a month in some species, oilseed rapa can go from seed-to-seed in about five weeks under a bank of fluorescent lamps. This style of growing is used in classrooms for education. Many desert annuals are therophytes, because their life cycle is only weeks. In cultivation, many plants are, or are grown as, annuals. Some perennials and biennials are grown in gardens as annuals for convenience, carrot, celery and parsley are true biennials that are usually grown as annual crops for their edible roots, petioles and leaves, respectively. Tomato, sweet potato and bell pepper are tender perennials usually grown as annuals, ornamental perennials commonly grown as annuals are impatiens, wax begonia, snapdragon, Pelargonium, coleus and petunia. Examples of true annuals include corn, wheat, rice, lettuce, peas, watermelon, beans, zinnia, summer annuals sprout, flower, produce seed, and die, during the warmer months of the year. The lawn weed crabgrass is a summer annual, winter annuals germinate in autumn or winter, live through the winter, then bloom in winter or spring. The plants grow and bloom during the season when most other plants are dormant or other annuals are in seed form waiting for warmer weather to germinate. Winter annuals die after flowering and setting seed, the seeds germinate in the autumn or winter when the soil temperature is cool. Winter annuals typically grow low to the ground, where they are sheltered from the coldest nights by snow cover. Some common winter annuals include henbit, deadnettle, chickweed, ironically, the property that they prevent the soil from drying out can also be problematic for commercial agriculture. In 2008, it was discovered that the inactivation of only two genes in one species of annual plant leads to the conversion into a perennial plant, researchers deactivated the SOC1 and FUL genes in Arabidopsis thaliana, which control flowering time. This switch established phenotypes common in plants, such as wood formation
Annual plant
–
Peas are an annual plant.
24.
Delia antiqua
–
Delia antiqua, commonly known as the onion fly, is a cosmopolitan pest of crops. The larvae or maggots feed on onions, garlic, and other bulbous plants, the onion fly has an ash-grey body and resembles a housefly. The male has a stripe on the abdomen which is lacking in the female. The legs are black, the transparent, and the compound eyes brown. The eggs are white and elongated and are laid in groups on the shoots, leaves, the larvae are white and cylindrical and hatch in 3 to 8 days. Each batch of larvae tends to keep together and collectively create large cavities in bulbs, more than 50 maggots may feed on one bulb, sometimes originating from eggs laid by several females. The larvae moult three times, feed for about 20 days, and grow to about 1.0 cm long, the pupa is brown, ringed, and ovoid and measures 7 mm long. Pupation occurs in the ground with the phase from the spring generation lasting two or three weeks. Late-generation pupae overwinter in the soil, the onion fly is found in North America, Western Europe, Russia, Central Asia, China, Japan, and Korea, but is absent from deserts. In the far north of its range, it has one generation per year, the larvae damage bulbs of onions, garlic, chives, shallots, leeks, and flowering plants. The first generation of larvae is the most harmful because it extends over a long period owing to the females longevity, seedlings of onion and leek can be severely affected as can thinned-out onions and shallots. Less damage occurs in wet and cold springs, as this delays the development of the larvae, when plants are attacked, the leaves start to turn yellow and the bulbs rot quickly, especially in damp conditions. Control measures include crop rotation, the use of seed dressings, early sowing or planting, survey and removal of infested plants, harris, M, Miller, J. Host-acceptance behaviour in an herbivorous fly, Delia antiqua. Harris, Marion O. Miller, James R, color Stimuli and Oviposition Behavior of the Onion Fly, Delia antiqua. Annals of the Entomological Society of America
Delia antiqua
–
Delia antiqua
Delia antiqua
–
Onion damaged by D. antiqua larvae
25.
Potato onion
–
The potato onion is a variety of the Aggregatum Group of Allium cepa, similar to the shallot, although producing larger bulbs. It is remarkably easy to grow, keeps better than almost any other variety of onion and it was very popular in the past, but--like many old varieties--it has been passed over in favor of types more suitable for mechanical harvesting and mass marketing. It is generally planted from bulbs, not from seed, most sources say it should be planted in the fall, but this probably applies only to areas with moderate climates. It can be planted in the spring as early as the ground can be worked and produces well when so planted, sources differ about planting depth, some saying shallow planting is appropriate and others calling for deeper planting. This onion does tend to very close to the surface. The onions vary in size from half an inch to three inches in diameter
Potato onion
–
Onion cultivars
26.
Pickled onion
–
Pickled onions are a food item consisting of onions pickled in a solution of vinegar and salt, often with other preservatives and flavourings. In the United Kingdom they are eaten alongside fish and chips or as part of a ploughmans lunch. There is a variety of small white pickled onions known as silverskin onions, pickled onions are usually pickled in malt vinegar and the onions are about an inch in diameter. Silverskin onions are pickled in vinegar, and are much smaller. Full sized onions, e. g. Spanish Onions, can be pickled if sliced first, in the Southern United States, pickled Vidalia onions can be served as a side dish. In Hong Kong, pickled onions are served in many Cantonese restaurants, especially around dinner time, in Switzerland, they are served to accompany raclette, along with pickled gherkins. In Mexican cuisine, one preparation, cebollas curtidas, has sliced red onions pickled in a mixture of citrus juices and vinegar, sometimes cooked beets are added, producing a more strongly pink coloured dish. List of onion dishes Oriental onion
Pickled onion
–
A jar of home made pickled onions in spiced malt vinegar
Pickled onion
–
A dish of pickled silverskin onions
Pickled onion
–
Dutch Amsterdamse uitjes: small onions pickled with spices; the yellow colour is from either
turmeric or
saffron. Here served with
ossenworst (smoked minced beef).
Pickled onion
–
Onion cultivars
27.
Chutney
–
Chutney is a sauce in the cuisines of the Indian subcontinent that can vary from a tomato relish to a ground peanut garnish or a yoghurt, cucumber and mint dip. An offshoot that took root in Anglo-Indian cuisine is usually a tart fruit such as sharp apples, nowadays, some of the making of pickles and chutneys that at one time in India was done entirely in peoples homes has passed over into commercial production. Regular consumption of products can add to total sugar, consumption being increased to unhealthy levels. In south India, Thogayal or Thuvayal are preparations similar to chutney, medicinal plants that are believed to have a beneficial effect are sometimes made into chutneys, for example Pirandai Thuvayal or ridged gourd chutney. Ridged gourd can be bought in Chinese and Indian shops in towns in the west. And, when dried, becomes a bath sponge known as a luffa or loofah, bitter gourd can also serve as a base for a chutney which is like a relish or, alternatively as a dried powder. Occasionally, chutneys that contrast in taste and colour can be served together—a favourite combination being a green mint and chile chutney with a sweet brown tamarind. Chutneys may be ground with a mortar and pestle or an ammikkal, spices are added and ground, usually in a particular order, the wet paste thus made is sautéed in vegetable oil, usually gingelly or peanut oil. Electric blenders or food processors can be used as labor-saving alternatives to stone grinding, American and European-style chutneys are usually fruit, vinegar, and sugar cooked down to a reduction, with added flavourings. These may include sugar, salt, garlic, tamarind, onion or ginger, western-style chutneys originated from Anglo-Indians at the time of the British Raj recreated Indian chutneys using English orchard fruits—sour cooking apples and rhubarb, for example. They would often contain dried fruit, raisins, currants and sultanas, South Indian chutney powders are made from roasted dried lentils to be sprinkled on idlis and dosas. Peanut chutneys can be wet or as a dry powder. Spices commonly used in chutneys include fenugreek, coriander, cumin, Major Greys Chutney is a type of sweet and spicy chutney popular in the United Kingdom and the United States. The recipe was created by a 19th-century British Army officer of the same name who presumably lived in Colonial India. Its characteristic ingredients are mango, raisins, vinegar, lime juice, onion, tamarind extract, sweetening, several companies produce a Major Greys Chutney, in India, the UK and the US. The word chutney is derived from the Hindi word चटनी chaṭnī and it is written differently in North and South Indian languages. Pacchadi, as written in Telugu script, refers specifically to pickled fruits, whilst chutney refers to minced foods, in India, chutney refers to fresh and pickled preparations indiscriminately. Several Indian languages use the word for fresh preparations only, a different word achār applies to pickles that often contain oil and are rarely sweet
Chutney
–
Chutney
Chutney
–
Dakshin chutneys
Chutney
–
Chutneys
Chutney
–
Mango chutney
28.
Species description
–
A species description is a formal description of a newly discovered species, usually in the form of a scientific paper. Its purpose is to give a description of a new species of organism and explain how it differs from species which have been described previously. The species description often contains photographs or other illustrations of the type material, the publication in which the species is described gives the new species a formal scientific name. Today, some 1.9 million species have been described and named and it is customary for scientists to introduce all relevant new findings and research in a scientific manuscript, which is sent to other scientists for peer review. If accepted, it is published in a journal of the appropriate discipline or in a book. Descriptions and naming of a new species or other taxa follow the same process, a name of a new species becomes valid with the date of publication of its formal scientific description. A scientific species description must fulfill several formal criteria specified by the nomenclature codes, Species names are written in the 26 letters of the Latin alphabet, but many species names are based on words from other languages, Latinized. Once the manuscript has been accepted for publication, the new name is officially created. Once a species name has been assigned and approved, it can not be changed except in the case of error. For example, a species of beetle was named by a German collector after Adolf Hitler in 1933 when he had become chancellor of Germany. It is not clear whether such a dedication would be considered acceptable or appropriate today, Species names have been chosen on many different bases. Most common is a naming for the external appearance, its origin. Examples would include a bat species named for the two stripes on its back, a named for its Bolivian origin, and an ant species dedicated to the actor Harrison Ford. A scientific name in honor of a person or persons is a known as a taxonomic patronym or patronymic, a number of humorous species names also exist. Literary examples include the genus name Borogovia, which is named after the borogove, a second example, Macrocarpaea apparata was named after the magical spell to apparate from the Harry Potter novels by J. K. Rowling, as it seemed to appear out of nowhere. For example, the genus Victoria was named in honour of Queen Victoria of Great Britain, more recently, a species of lemur was named after the actor John Cleese in recognition of his work to publicize the plight of lemurs in Madagascar. Non-profit ecological organizations may also allow benefactors to name new species in exchange for support for taxonomic research. A German non-profit organisation, BIOPAT - Patrons for Biodiversity has raised more than $450,000 for research, the International Code of Nomenclature for algae, fungi, and plants discourages this practice somewhat, Recommendation 20A
Species description
–
Original title page of
Linnaeus 's
Systema Naturae, published in 1735.
29.
Species Plantarum
–
Species Plantarum is a book by Carl Linnaeus, originally published in 1753, which lists every species of plant known at the time, classified into genera. It is the first work to consistently apply binomial names and was the point for the naming of plants. Species Plantarum was published on 1 May 1753 by Laurentius Salvius in Stockholm, a second edition was published in 1762–1763, and a third edition in 1764, although this scarcely differed from the second. Species Plantarum was the first botanical work to apply the binomial nomenclature system of naming to any large group of organisms. The use of names had originally been developed as a kind of shorthand in a student project about the plants eaten by cattle. After the specific epithet, Linnaeus gave a description of each species. Because it is the first work in which binomial nomenclature was consistently applied, Species Plantarum contained descriptions of the thousands of plant species known to Linnaeus at the time. In the first edition, there were 5,940 names, in his introduction, Linnaeus estimated that there were fewer than 10,000 plant species in existence, there are now thought to be around 400,000 species of flowering plants alone. The species were arranged in around a thousand genera, which were grouped into 24 classes, 1–2 at Biodiversity Heritage Library facsimile Species Plantarum, vol. 1, vol.2 at Botanicus Species Plantarum at Project Guttenberg I-III IV-V VI-X XI-XIII text Linnaeus Link Union Catalogue
Species Plantarum
–
Cover page of first edition
Species Plantarum
–
Prior to Species Plantarum, this plant was referred to as " Plantago foliis ovato-lanceolatis pubescentibus, spica cylindrica, scapo tereti "; Linnaeus renamed it
Plantago media.
30.
Iran
–
Iran, also known as Persia, officially the Islamic Republic of Iran, is a sovereign state in Western Asia. Comprising a land area of 1,648,195 km2, it is the second-largest country in the Middle East, with 82.8 million inhabitants, Iran is the worlds 17th-most-populous country. It is the country with both a Caspian Sea and an Indian Ocean coastline. The countrys central location in Eurasia and Western Asia, and its proximity to the Strait of Hormuz, Tehran is the countrys capital and largest city, as well as its leading economic and cultural center. Iran is the site of to one of the worlds oldest civilizations, the area was first unified by the Iranian Medes in 625 BC, who became the dominant cultural and political power in the region. The empire collapsed in 330 BC following the conquests of Alexander the Great, under the Sassanid Dynasty, Iran again became one of the leading powers in the world for the next four centuries. Beginning in 633 AD, Arabs conquered Iran and largely displaced the indigenous faiths of Manichaeism and Zoroastrianism by Islam, Iran became a major contributor to the Islamic Golden Age that followed, producing many influential scientists, scholars, artists, and thinkers. During the 18th century, Iran reached its greatest territorial extent since the Sassanid Empire, through the late 18th and 19th centuries, a series of conflicts with Russia led to significant territorial losses and the erosion of sovereignty. Popular unrest culminated in the Persian Constitutional Revolution of 1906, which established a monarchy and the countrys first legislative body. Following a coup instigated by the U. K. Growing dissent against foreign influence and political repression led to the 1979 Revolution, Irans rich cultural legacy is reflected in part by its 21 UNESCO World Heritage Sites, the third-largest number in Asia and 11th-largest in the world. Iran is a member of the UN, ECO, NAM, OIC. Its political system is based on the 1979 Constitution which combines elements of a democracy with a theocracy governed by Islamic jurists under the concept of a Supreme Leadership. A multicultural country comprising numerous ethnic and linguistic groups, most inhabitants are Shia Muslims, the largest ethnic groups in Iran are the Persians, Azeris, Kurds and Lurs. Historically, Iran has been referred to as Persia by the West, due mainly to the writings of Greek historians who called Iran Persis, meaning land of the Persians. As the most extensive interactions the Ancient Greeks had with any outsider was with the Persians, however, Persis was originally referred to a region settled by Persians in the west shore of Lake Urmia, in the 9th century BC. The settlement was then shifted to the end of the Zagros Mountains. In 1935, Reza Shah requested the international community to refer to the country by its native name, opposition to the name change led to the reversal of the decision, and Professor Ehsan Yarshater, editor of Encyclopædia Iranica, propagated a move to use Persia and Iran interchangeably
Iran
–
Cave painting in Doushe cave,
Lorestan, Iran,
8th millennium BC
Iran
–
Flag
Iran
–
A depiction of the united
Medes and
Persians in
Apadana,
Persepolis
Iran
–
Ruins of the
Gate of All Nations,
Persepolis
.jpg)
China
India
United States
Egypt
Iran
Russia
Turkey
Pakistan
Brazil
. PMID 24416168. doi:10.1371/journal.pone.0083556.
Media related to Onions at Wikimedia Commons
.jpg)
