Burke: Anemone oregana vs. Anemone occidentalis

	Anemone oregana	Anemone occidentalis
	Oregon anemone, Oregon windflower	mountain pasqueflower, western pasqueflower
Habit	Perennial from scaly, stout, horizontal rhizomes, the flowering stems 1-3 dm. tall.	Grayish, hairy perennial from a stout, branched, woody base, the stems 2-5 dm. tall.
Leaves	Basal leaves single, trifoliate, the leaflets once or twice shallowly lobed and remotely serrate; the flowering stem naked except for a whorl of 3 leaves near the top, these trifoliate, petiolate, the leaflets up to 8 cm. long, the lateral pair deeply lobed, all remotely toothed.	Basal leaves long-petiolate, the blades large, ternate and 2-3 times pinnately compound, the ultimate segments linear, 0.5-2 mm. broad; the flowering stem naked except for a whorl of 3 leaves above the midpoint, these similar to the basal leaves but sessile.
Flowers	Flowers single; sepals usually 5, ovate-oblong, 12-20 mm. long, usually blue to blue-violet, but occasionally white or pinkish; petals none; stamens 35-100; pistils numerous.	Flowers single; sepals 5-8, oblong, broadly rounded, white or purplish-tinged, 2-3 cm. long; petals none; stamens and pistils numerous.
Fruits	Achenes narrowly oblong, 4 mm. long, finely pubescent; style 0.5 mm. long, glabrous.	Achenes with long, soft hairs, 4 mm. long; styles sinuous, 2-3.5 cm. long, silky-plumose.

	Anemone oregana	Anemone occidentalis
Flowering time	March-June	May-August
Habitat	Moist, open woods, low to mid-elevations in the mountains, also in marshes and bogs along the coast.	Open slopes and meadows from middle elevations to the alpine.
Distribution	Occurring in forested areas on both sides of the Cascades crest in Washington; Washington to northern California. [WildflowerSearch map] [BONAP county map]	Occurring in the Olympic and Cascade mountains in Washington; British Columbia to California, east to Alberta, Montana, Idaho, and the Wallowa Mountains of Oregon. [WildflowerSearch map]
Origin	Native	Native
Conservation status	Not of concern	Not of concern
Sibling taxa	A. deltoidea, A. drummondii, A. lyallii, A. multifida, A. occidentalis, A. parviflora, A. patens, A. piperi	A. deltoidea, A. drummondii, A. lyallii, A. multifida, A. oregana, A. parviflora, A. patens, A. piperi
Subordinate taxa	A. oregana var. felix, A. oregana var. oregana
Web links	Local floras: OR, WA Local Web sites: Flora NW, PNW Herbaria, Turner Photog. WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria, Turner Photog. WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Anemone occidentalis

Oregon anemone, Oregon windflower

mountain pasqueflower, western pasqueflower

Habit

Perennial from scaly, stout, horizontal rhizomes, the flowering stems 1-3 dm. tall.

Grayish, hairy perennial from a stout, branched, woody base, the stems 2-5 dm. tall.

Leaves

Basal leaves single, trifoliate, the leaflets once or twice shallowly lobed and remotely serrate; the flowering stem naked except for a whorl of 3 leaves near the top, these trifoliate, petiolate, the leaflets up to 8 cm. long, the lateral pair deeply lobed, all remotely toothed.

Basal leaves long-petiolate, the blades large, ternate and 2-3 times pinnately compound, the ultimate segments linear, 0.5-2 mm. broad; the flowering stem naked except for a whorl of 3 leaves above the midpoint, these similar to the basal leaves but sessile.

Flowers

Flowers single;

sepals usually 5, ovate-oblong, 12-20 mm. long, usually blue to blue-violet, but occasionally white or pinkish;

petals none;

stamens 35-100;

pistils numerous.

Flowers single;

sepals 5-8, oblong, broadly rounded, white or purplish-tinged, 2-3 cm. long;

petals none;

stamens and pistils numerous.

Fruits

Achenes narrowly oblong, 4 mm. long, finely pubescent;

style 0.5 mm. long, glabrous.

Achenes with long, soft hairs, 4 mm. long;

styles sinuous, 2-3.5 cm. long, silky-plumose.

Anemone oregana

Anemone occidentalis

Flowering time

March-June

May-August

Habitat

Moist, open woods, low to mid-elevations in the mountains, also in marshes and bogs along the coast.

Open slopes and meadows from middle elevations to the alpine.

Distribution

Occurring in forested areas on both sides of the Cascades crest in Washington; Washington to northern California.

[WildflowerSearch map]

[BONAP county map]

Occurring in the Olympic and Cascade mountains in Washington; British Columbia to California, east to Alberta, Montana, Idaho, and the Wallowa Mountains of Oregon.

[WildflowerSearch map]

Origin

Native

Conservation status

Not of concern

Sibling taxa