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Triphora trianthophora
''Triphora trianthophora'', or three birds orchid, is a species of terrestrial orchid native to eastern North America.〔http://plants.usda.gov/core/profile?symbol=TRTR3〕
== Description ==
''T. trianthophora'' is a small, terrestrial, semi-saprophytic orchid. The showiest member of its genus, ''T. trianthophora'' has 1-8 (often 3, thus the name) nodding flowers that are roughly 2 cm in size and sit atop stems 8–25 cm tall. Leaves are small (~1 cm X 1.5 cm) and typically dark green to purple. The orchid blooms from July through September, but is infamous for its elusive nature, with ephemeral flowers lasting for only several hours on a few days of the year. It has further been reported that populations across a region synchronize blooming on specific days, making observation of flowering specimens even more difficult. Several forms of ''T. trianthophora'' exist, including forma ''albidoflava'' (Keenan) with white flowers, forma ''caerulea'' (P.M. Brown) with blue flowers, and forma ''rossii'' (P.M. Brown) with multi-colored flowers.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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