Gnaphalium

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cudweeds
Starr 030523-0063 Gnaphalium sandwicensium.jpg
Gnaphalium sandwicensium
from Hawai'i
Scientific classification e
Kingdom: Plantae
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Tribe: Gnaphalieae
Genus: Gnaphalium
L. 1753 not Adans. 1763
Type species
Gnaphalium luteoalbum[1][2]
Synonyms[3]
  • Filaginella Opiz
  • Gnaphalium sect. Synchaeta (Kirp.) Kirp.
  • Gnaphalium sect. Omalotheca (Cass.) Endl.
  • Homognaphalium Kirp.
  • Gnaphalium sect. Eugnaphalium DC.
  • Synchaeta Kirp.
  • Dasyranthus Raf. ex Steud.
  • Gnaphalion St.-Lag.
  • Demidium DC.
  • Omalotheca Cass.
  • Dasyanthus Bubani
  • Amphidoxa DC.
  • Omalotheca subg. Gamochaetiopsis Sch.Bip. & F.W. Schulz
  • Gnaphalium sect. Eu-Gnaphalium O.Hoffm.

Gnaphalium is a genus of flowering plants in the sunflower family,[2][4] commonly called cudweeds. They are widespread and common in temperate regions, although some are found on tropical mountains or in the subtropical regions of the world.

Cudweeds are important foodplants for American painted lady caterpillars.

Species[edit]

Species in this genus include:[3]

Gnaphalium spicatum, from Hooker's Flora Antarctica, 1844

Formerly included[edit]

Numerous species have at one time been included in Gnaphalium,[3] but are now considered to belong to other genera: Achyrocline, Aliella, Ammobium, Anaphalioides, Anaphalis, Anaxeton, Antennaria, Argyrotegium, Belloa, Berroa, Blumea, Castroviejoa, Chevreulia, Chionolaena, Chrysocephalum, Dolichothrix, Edmondia, Euchiton, Ewartia, Facelis, Filago, Galeomma, Gamochaeta, Gnomophalium, Helichrysum, Ifloga, Laphangium, Lasiopogon, Leontonyx, Leontopodium, Leucogenes, Logfia, Lucilia, Luciliocline, Metalasia, Micropsis, Neojeffreya, Novenia, Ozothamnus, Pentzia, Petalacte, Phagnalon, Pilosella, Plecostachys, Pseudognaphalium, Pterocaulon, Rhodanthe, Raoulia, Schizogyne, Staehelina, Stuckertiella, Syncarpha, Troglophyton, Vellereophyton, Xerochrysum

Secondary metabolites[edit]

Gnaphalium species are known to contain flavonoids and diterpenes. Recently, two unique caffeoyl-D-glucaric acid derivatives, leontopodic acid and leontopodic acid B formerly only known from Leontopodium alpinum (L.) Cass. were detected in various species of Gnaphalium together with similar formerly unknown compounds.[5]

References[edit]

  1. ^ lectotype designated by Britton & Brown, Illustrated Flora of North America 3: 453. 1913
  2. ^ a b Tropicos, Gnaphalium L.
  3. ^ a b c Flann, C (ed) 2009+ Global Compositae Checklist search for Gnaphalium
  4. ^ Linnaeus, Carl von. 1753. Species Plantarum 2: 850-857 in Latin
  5. ^ Cicek, S; Untersulzner, C; Schwaiger, S; Zidorn, C (July 2012). "Caffeoyl-D-glucaric acid derivatives in the genus Gnaphalium (Asteraceae: Gnaphalieae)" (Free full text). Records of Natural Products (Gebze-Kocaeli , Türkiye). 6 (3): 311–315. ISSN 1307-6167.

External links[edit]