|
Dolichousnea Diffracta
''Dolichousnea'' is a genus of fruticose lichens in the family Parmeliaceae. It has three species. The widely distributed type species, ''Dolichousnea longissima'', is found in boreal ecosystem, boreal regions of Asia, Europe, and North America. Taxonomy ''Dolichousnea'' was originally circumscription (taxonomy), circumscribed as a subgenus of the large genus ''Usnea'', by Japanese lichenologist Yoshihito Ohmura in 2001. He considered that it was possible to treat the three taxa as a genus, but thought it more suitable to treat ''Dolichousnea'' at the rank of subgenus, because the taxa have the synapomorphy and apomorphy, synapomorphies of the genus ''Usnea'': a fruticose thallus, a central cartilaginous axis throughout the thallus, and the presence of usnic acid in the cortex. In 2004, Kristina Articus proposed to raise the subgenus to generic rank, a decision that was accepted in later analyses. Description ''Dolichousnea'' lichens have a pendent thallus, in which all the branc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Washington (state)
Washington (), officially the State of Washington, is a state in the Pacific Northwest region of the Western United States. Named for George Washington—the first U.S. president—the state was formed from the western part of the Washington Territory, which was ceded by the British Empire in 1846, by the Oregon Treaty in the settlement of the Oregon boundary dispute. The state is bordered on the west by the Pacific Ocean, Oregon to the south, Idaho to the east, and the Canadian province of British Columbia to the north. It was admitted to the Union as the 42nd state in 1889. Olympia is the state capital; the state's largest city is Seattle. Washington is often referred to as Washington state to distinguish it from the nation's capital, Washington, D.C. Washington is the 18th-largest state, with an area of , and the 13th-most populous state, with more than 7.7 million people. The majority of Washington's residents live in the Seattle metropolitan area, the center of trans ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
