Vascular Plants - Orchidaceae - Spiranthes:
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Spiranthes diluvialis
Page Author: David Giblin
diluvim ladies'-tresses 
Image © Florence Caplow
Image © Florence Caplow
Blooms: July-September
Habit: herb
Duration: perennial
Origin: Native
Conservation Status: Endangered

Distribution: East of the Cascades in Washington; scattered localities in Colorado, Utah, Wyoming, Idaho and Montana.
Habitat: Moist to wet meadows, marshes, and riparian areas.
Accepted Name:
Spiranthes diluvialis Sheviak
Synonyms:
Spiranthes romanzoffiana Cham. var. diluvialis (Sheviak) S. L. Welsh

Treated in Flora of the PNW as:
NOT INN H&C
Additional Resources:

PNW Herbaria Specimens: View list of Spiranthes diluvialis specimens in the Consortium of Pacific Northwest Herbaria database.

WTU Herbarium Specimens: View list of Spiranthes diluvialis specimens in the WTU Herbarium database.

Washington Flora Checklist: Spiranthes diluvialis treatment.

E-Flora BC: Spiranthes diluvialis atlas page.

CalPhotos: Spiranthes diluvialis images.

USDA Plants Database: Spiranthes diluvialis.
Additional photographs of Spiranthes diluvialis:
(click on a thumbnail to view larger photo)

Florence Caplow

Florence Caplow
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Burke Museum


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Washington Native Plant Society
WA Native Plant Society