Spiranthes porrifolia |
Spiranthes lacera |
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western ladies tresses |
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Habit | Herbs 25–55 cm tall. | |
Leaves | 3–4, ellipticlanceolate; to 35 × 3 cm. |
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Inflorescences | dense tightly spiraled spikes, generally 3-ranked, 10–60-flowered; rachis glabrous to sparsely pubescent. |
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Flowers | ascending; sepals and petals lanceolate; creamy-yellow to yellowish, converging with lip to form a tube; tips spreading, 7–8 × 1–2.5 mm; lateral sepals oblique; lip ovate to lanceolate; concave to loosely folded with a narrowed apex, 6–8 × 3–4 mm. |
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2n | =44. |
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Spiranthes porrifolia |
Spiranthes lacera |
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Distribution | ||
Discussion | Stream banks, river banks, seeps, riparian meadows. Flowering Jun–Jul. 0–2700m. Casc, CR, Sisk, WV. CA, ID, NV, WA. Native. The spreading perianth tips and narrow-tipped lip distinguish this species from the more common S. romanzoffiana. |
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Source | Flora of Oregon, volume 1, page 330 James Riser |
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Sibling taxa | ||
Synonyms | Spiranthes romanzoffiana var. porrifolia | |
Web links |