Flora of North America species comparison

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Olsynium douglasii

Olsynium douglasii var. douglasii
Olsynium douglasii

Douglas' blue-eyed-grass (var. douglasii), Douglas' grass-widow, grass widows, grass-widow, purple blue-eyed-grass (var. inflatum), purple-eyed grass, purple-eyed grass-widow, satinflower
Photo is of parent taxon

Douglas grass widows, Douglas' grasswidow, grass widows, purple-eyed grass-widow, purple-eyed-grass, satinflower
Stems

to 4.1 dm × 1–4.6 mm.

Leaf

blades 1.5–4.5 mm wide distal to midlength.

Spathes

4.3–7 mm wide, outer 2–6.2 cm;

hyaline margins 0.2–0.5(–1.6) mm wide, extending to just proximal to, or occasionally exceeding, green apex.

Capsules

4.5–11.3 mm.

Tepals

12.5–33 mm;

filaments 6–12.2 mm;

anthers 3–10.2 mm;

ovary 2–5.6 mm;

pedicel 2–3.8 cm.

Filament

columns tapering evenly to base or slightly flared.
2n

= 64.

Olsynium douglasii

Olsynium douglasii var. douglasii
Phenology Flowering late winter–early summer.
Habitat Open, often rocky areas moist in spring, oak woodlands, coniferous forests, sagebrush, lake margins
Elevation 0–2200 m [0–7200 ft]
Distribution
from USDA
w North America
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; OR; WA; BC
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Filament column abruptly and broadly flared at base.
var. inflatum
1. Filament column slightly or not flared.
var. douglasii
Source FNA vol. 26. Treatment authors: Anita F. Cholewa, Douglass M. Henderson†. FNA vol. 26. Treatment authors: Anita F. Cholewa, Douglass M. Henderson†.
Parent taxa Iridaceae > Olsynium Iridaceae > Olsynium > Olsynium douglasii
Sibling taxa
O. douglasii var. inflatum
Subordinate taxa
O. douglasii var. douglasii, O. douglasii var. inflatum
Synonyms Sisyrinchium douglasii
Name authority (A. Dietrich) E. P. Bicknell: Bull. Torrey Bot. Club 27: 237. (1900) unknown
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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