Synonyms: Habenaria viridis Other names: longbract frog orchid Nomenclature: viride = green Nativity / Invasiveness: Montana native plant
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Description
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.
June-July.
Dryish to moist woods and open mountain slopes, in w. and c. parts of MT. Also from AK to B.C., WY, UT, CO, NM, NE, IL, WV, and NC, and in Eurasia.
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