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Machi, Mary Ann

Olsynium douglasii

Olsynium douglasii (A. Dietr.) E.P. Bicknell

Douglas' Grasswidow, Grass Widow, Satin Flower

Iridaceae (Iris Family)

Synonym(s):

USDA Symbol: OLDO

USDA Native Status: L48 (N), CAN (N)

Few reddish-lavender or purple, bowl-shaped flowers atop stems rising from clumps of narrow, sword-like leaves.

Once considered a member of the genus Sisyrinchium, Grass Widow, with its inflated stamen base, is now placed in the closely related genus Olsynium. There is only one species in the West, with two varieties. The variety inflatum, from mostly east of the Cascade Range, has a distinctly flared stamen base. The variety douglasii has an indistinctly flared stamen base; it occurs mostly west of the Cascade Range, from British Columbia south to northern California.

From the Image Gallery

7 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb

Bloom Information

Bloom Color: White , Pink , Purple
Bloom Time: Mar , Apr , May , Jun
Bloom Notes: Reddish-lavender to purple, occasionally pink or white.

Distribution

USA: CA , ID , NV , OR , UT , WA
Canada: BC
Native Distribution: Southern British Columbia south to northern Oregon and east to central Idaho, northern Nevada, and northern Utah.
Native Habitat: Grassy areas in sagebrush and open woods.

National Wetland Indicator Status

Region:	AGCP	AK	AW	CB	EMP	GP	HI	MW	NCNE	WMVE
Status:			FACU							FACU

This information is derived from: U.S. Army Corps of Engineers. (2023). 2022 National Wetland Plant List, version 3.6. U.S. Army Engineer Research and Development Center, Vicksburg, MS. https://wetland-plants.usace.army.mil/. Click here for map of regions.

Bibliography

Bibref 928 - 100 easy-to-grow native plants for Canadian gardens (2005) Johnson, L.; A. Leyerle

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Web Reference

Webref 3 - Flora of North America (2014) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.

Additional resources

USDA: Find Olsynium douglasii in USDA Plants
FNA: Find Olsynium douglasii in the Flora of North America (if available)
Google: Search Google for Olsynium douglasii

Metadata

Record Modified: 0000-00-00
Research By: TWC Staff

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