Synonyms: Habenaria viridis Other names: longbract frog orchid Nomenclature: viride = green Nativity / Invasiveness: Montana native plant
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General: perennial, sturdy, leafy-stemmed, 20-50 cm tall, hairless, from fleshy roots.
Leaves: alternate, sheathing, somewhat reduced and narrowed upward, the lower ones with oblong-lanceolate, mostly rounded blades 3-7 cm long, round-tipped, the middle ones largest, up to 10-12 cm long, more pointed.
Flowers: many in a dense, elongated spike, the bracts conspicuous, green, lanceolate, the lower ones leaflike, 2-4 cm long, reduced upward but often longer than the flowers. Flowers almost stalkless, greenish. Upper sepal ovate, 4-6 mm long, concave, the side sepals broadly lanceolate, concave, slightly longer than the upper one, blunt-tipped, touching the petals and upper sepal, forming a hood over the lip. Petals narrower and shorter than the sepals, the lip oblong, 7-11 mm long, about 3 mm broad, 3-lobed at the tip, the middle lobe always the shortest. Spur sac-like, 1/4-1/2 as long as the lip, pale and translucent. Pollen sacs about 1.5 mm long, joining tissue less than 1 mm wide.