Spiranthes porrifolia |
Spiranthes romanzoffiana |
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western ladies'-tresses |
hooded ladies'-tresses |
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Habit | Glabrous, herbaceous perennials from enlarged, fleshy roots, the stems 1-6 dm. tall. | Glabrous, herbaceous perennials from enlarged, fleshy roots, the stems 1-6 dm. tall. |
Leaves | Leaves several near the base of the stem, linear to oblong, 8-20 cm. long and 5-10 mm. broad, abruptly transitional upward to short, sheathing, lanceolate bracts. |
Leaves several near the base of the stem, linear to oblong, 8-20 cm. long and 5-10 mm. broad, abruptly transitional upward to short, sheathing, lanceolate bracts. |
Flowers | Inflorescence a dense spike 3-12 cm. long, the flowers cream to greenish-white, aligned in 1-4 spiralling, vertical rows; floral bracts 10-20 mm. long, about equal to the tubular flowers, whitish; sepals viscid-pubescent, the upper one and the petals subequal, fused into a curved, tubular hood 7-12 mm. long; lip sharply reflexed, about as long as the sepals, nearly triangular, not constricted below the tip, the base with prominent protuberances; column bearing the single anther 2-4 mm. long with a slender, forked terminal beak; ovary inferior |
Inflorescence a dense spike 3-12 cm. long, the flowers white to cream, aligned in 1-4 spiralling, vertical rows; floral bracts 10-20 mm. long, about equal to the tubular flowers, whitish; sepals viscid-pubescent, the upper one and the petals subequal, fused into a curved, tubular hood 7-12 mm. long; lip sharply reflexed, about as long as the sepals, the basal half strongly concave, constricted below the tip; column bearing the single anther 2-4 mm. long with a slender, forked terminal beak; ovary inferior |
Fruits | Capsule. |
Capsule. |
Spiranthes porrifolia |
Spiranthes romanzoffiana |
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Flowering time | July-August | July-September |
Habitat | Moist to swampy areas. | Seasonally moist to swampy areas, sometimes in disturbed areas. |
Distribution | Occurring east of the Cascades crest in Washington; Washington to California, east to Idaho.
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Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains and across the northern U.S. and Canada to the Atlantic Coast.
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Origin | Native | Native |
Conservation status | Sensitive in Washington (WANHP) | Not of concern |
Sibling taxa | ||
Web links |
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