Year 1055 was a common year starting on Sunday of the Julian calendar. January 11 – Emperor Constantine IX dies after a 12½-year reign at Constantinople, he is succeeded by Theodora, proclaimed by the imperial guard as empress of the Byzantine Empire. King Ferdinand I begins his campaign against al-Andalus, he conquers Seia from the Christian allies of the Muslim taifas. In a drive to consolidate his southern border in Portugal – Ferdinand re-populates the city of Zamora with some of his Cantabrian subjects. October 24 – Ælfgar, earl of Mercia, is outlawed by the witan. In revenge he builds allies himself with the Welsh king Gruffydd ap Llywelyn. After defeating Ralph the Timid, they attack Hereford and raid the church – taking everything of value leaving the building on fire; the rebels attack Leominster. Edward the Confessor gives Tostig Godwinson the important position as earl of Northumbria and the difficult mission of bringing the northern state under control. Winter – The Seljuk Turks led by Sultan Tughril capture Baghdad and enter the city in a Roman-styled truimph.

Al-Malik al-Rahim, the last Buyid emir in Iraq, is taken prisoner. Construction on the Liaodi Pagoda in Hebei is completed. King Andrew I establishes the Benedictine Tihany Abbey, its foundation charter is the earliest written record extant in the Hungarian language. April 13 – Pope Victor II succeeds Leo IX as the 153rd pope of the Catholic Church in Rome. August 16 – Malik-Shah I, sultan of the Seljuk Empire September 28 – Uicheon, Korean Buddhist monk Adelaide of Weimar-Orlamünde, German noblewoman Alger of Liège, French clergyman and priest Bertha of Holland, French queen consort Fujiwara no Akisue, Japanese nobleman Gilbert Crispin, Norman abbot and theologian Gruffudd ap Cynan, king of Gwynedd Hildebert, French hagiographer and theologian Ida of Austria, German duchess and crusader Judith of Lens, niece of William the Conqueror Machig Labdrön, Tibetan Buddhist teacher Minamoto no Shunrai, Japanese poet Terken Khatun, Seljuk empress Vigrahapala III, ruler of the Pala Empire January 10 – Bretislav I, duke of Bohemia January 11 – Constantine IX, Byzantine emperor April 10 – Conrad II, duke of Bavaria May 26 – Adalbert, margrave of Austria August 28 – Xing Zong, Chinese emperor November 13 – Welf III, duke of Carinthia December 5 – Conrad I, duke of Bavaria A Nong, Chinese shamaness and warrior Benedict I, Hungarian politician and archbishop Boniface IV Frederick, margrave of Tuscany Gruffydd ap Rhydderch, king of Deheubarth Mauger, archbishop of Rouen Nong Zhigao, Vietnamese chieftain of Nong Rinchen Zangpo, Tibetan Buddhist monk Siward, earl of Northumbria Theodore Aaronios, Byzantine governor Yan Shu, Chinese statesman and poet

Trigonidium obtusum

Trigonidium obtusum, the blue-leaved trigonidium, is an orchid found in Brazil that flowers in the summer. Trigonidium obtusum is about 15 cm tall; the pseudobulbs of the plant are oblong, with two lanceolate leaves. The scapes spring from the rhizome, each scape ends with a single flower; the flower is yellowish to pinkish with blue eyespots. The flower is 1 cm wide with sepals that are broader and taper less than other species. Flower development takes ten days, flowers wither four to ten days after opening. During the hottest hours of the day, the flowers release a sweet fragrance similar to lemon. Pentadecane is the main component of the fragrance. Male Plebeia droryana bees pollinate the flowers by performing pseudocopulation. Bees become trapped in the tubular orchid after being attracted by the sepals or petals of the flower. Two types T. obtusum flowers exist, one with one with attractive petals. The flowers are morphologically identical besides the sepals and flowers, most discourage self-pollination by hindering the process of bee learning.

Pollination of T. obtusum is unique in the fact that pollination does not only require pseudocopulation but trapping the male bee. Bees carrying pollinarium revisit the same flower, but self-pollination does not occur. Though pentadecane produces the fragrance of the flower, pentadecane itself does not attract P. droryana bees

Britannia, Calgary

Britannia is an affluent residential neighbourhood in the southwest quadrant of Calgary, Canada. It is bounded by Elbow Drive to the east, 50 Avenue S to the south, Elbow River and Riverdale Park to the west and Britannia Drive to the north; the area was annexed to the City of Calgary in 1910, Britannia was established in 1956. Most of the development took place in the late 1950s, it is represented in the Calgary City Council by the Ward 11 councillors. In the City of Calgary's 2012 municipal census, Britannia had a population of 803 living in 309 dwellings, a 7.6% increase from its 2011 population of 746. With a land area of 0.5 km2, it had a population density of 1,610/km2 in 2012. Residents in this community had a median household income of $120,387 in 2000, there were 7.9% low income residents living in the neighbourhood. As of 2000, 16.7% of the residents were immigrants. A proportion of 19.3% of the buildings were condominiums or apartments, 19.3% of the housing was used for renting. List of neighbourhoods in Calgary Britannia Community Association