Burke: Anemone occidentalis vs. Anemone deltoidea

	Anemone occidentalis	Anemone deltoidea
	mountain pasqueflower, western pasqueflower	threeleaf anemone, Columbian windflower
Habit	Grayish, hairy perennial from a stout, branched, woody base, the stems 2-5 dm. tall.	Herbaceous perennial from slender, horizontal rhizomes, the flowering stems 1-3 dm. tall, glabrous to stiff-hairy.
Leaves	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.	Basal leaves usually solitary, the blade tri-foliate, the leaflets short-petiolate, ovate, with coarse, rounded teeth, usually glabrous; the 3 involucral leaves simple, up to 8 cm. long, very similar to the leaflets of the basal leaves.
Flowers	Flowers single; sepals 5-8, oblong, broadly rounded, white or purplish-tinged, 2-3 cm. long; petals none; stamens and pistils numerous.	Flowers solitary; sepals usually 5, white, ovate to oblanceolate, 1.5-2.5 cm. long, glabrous; petals none; stamens and pistils numerous; style shorter than the achene.
Fruits	Achenes with long, soft hairs, 4 mm. long; styles sinuous, 2-3.5 cm. long, silky-plumose.	Achene swollen, ovate, 2.5-4 mm. long.

	Anemone occidentalis	Anemone deltoidea
Flowering time	May-August	April-May
Habitat	Open slopes and meadows from middle elevations to the alpine.	Dry to moist woodlands at low to middle elevations.
Distribution	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]	Occurring chiefly west of the Cascades crest and east in the Columbia River Gorge in Washington; Washington to California. [WildflowerSearch map] [BONAP county map]
Origin	Native	Native
Conservation status	Not of concern	Not of concern
Sibling taxa	A. deltoidea, A. drummondii, A. lyallii, A. multifida, A. oregana, A. parviflora, A. patens, A. piperi	A. drummondii, A. lyallii, A. multifida, A. occidentalis, A. oregana, A. parviflora, A. patens, A. piperi
Web links	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	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 deltoidea

mountain pasqueflower, western pasqueflower

threeleaf anemone, Columbian windflower

Habit

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

Herbaceous perennial from slender, horizontal rhizomes, the flowering stems 1-3 dm. tall, glabrous to stiff-hairy.

Leaves

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.

Basal leaves usually solitary, the blade tri-foliate, the leaflets short-petiolate, ovate, with coarse, rounded teeth, usually glabrous; the 3 involucral leaves simple, up to 8 cm. long, very similar to the leaflets of the basal leaves.

Flowers

Flowers single;

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

petals none;

stamens and pistils numerous.

Flowers solitary;

sepals usually 5, white, ovate to oblanceolate, 1.5-2.5 cm. long, glabrous;

petals none;

stamens and pistils numerous;

style shorter than the achene.

Fruits

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

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

Achene swollen, ovate, 2.5-4 mm. long.

Anemone occidentalis

Anemone deltoidea

Flowering time

May-August

April-May

Habitat

Open slopes and meadows from middle elevations to the alpine.

Dry to moist woodlands at low to middle elevations.

Distribution

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]