Pogonieae

Cleistes is a genus of orchids (family Orchidaceae). It contains approximately 40–50 species, most of them native to South America, with a few species extending north into Costa Rica and Trinidad. Two North American species were formerly included in this group, but are now regarded as a separate genus, Cleistesiopsis.

Duckeella is a genus of orchids (family Orchidaceae), belonging to the subfamily Vanilloideae. It has 3 known species, all native to South America:

Isotria (fiveleaf orchid) is a genus of flowering plants from the orchid family, Orchidaceae. ==Description== Isotria species are small perennial herbs with thin, hairy underground rhizomes. The erect, hollow shoots typically bear five leaves in a whorl, coated slightly bluish, widest above the middle, and pointed at the ends. The terminal inflorescence usually holds one, occasionally two flowers. Flowers are resupinate, with white, greenish, or reddish-brown bracts. The hermaphrodite, zygomorphic, tripartite flowers have three unfused, lanceolate sepals and smaller petals that point forward,

Pogonieae is an orchid tribe in the subfamily Vanilloideae. ==Taxonomy==

Cleistesiopsis is an orchid genus in the tribe Pogonieae. Its members were included in Cleistes until 2009. Cleistesiopsis is native to the eastern and southeastern United States from New Jersey south to Florida, and west to Kentucky and Louisiana. The common names are rosebud orchid and small spreading pogonia.

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