Anemone occidentalis

S. Watson
Proc. Amer. Acad. Arts 11: 121. 1876.
Common names: Western pasqueflower mountain pasqueflower pulsatille
Endemic
Synonyms: Anemone occidentalis var. subpilosa Hardin Pulsatilla occidentalis
Treatment appears in FNA Volume 3.

Aerial shoots 10-60(-75) cm, from caudices, caudices ascending to vertical. Basal leaves (2-)3-6(-8), primarily 3-foliolate with each leaflet pinnatifid to dissected; petiole 6-8(-12) cm; terminal leaflet petiolulate, ovate in outline, (2.5-)3-6(-8) cm, base cuneate, margins pinnatifid to dissected throughout, apex narrowly acute, surfaces villous; lateral leaflets 2×-parted, pinnatifid; ultimate segments 2-3 mm wide. Inflorescences 1-flowered; peduncle woolly or densely villous, glabrate; involucral bracts 3, occasionally more, 1-tiered, ±similar to basal leaves, 3-foliolate, ovate in outline, bases distinct; terminal leaflet petiolulate, 2.5-7 cm (2.5 cm in flower, 7 cm or less in fruit), margins pinnatifid throughout, apex narrowly acute, surfaces villous; lateral leaflets 2×-parted, pinnatifid; ultimate segments 2-3 mm wide. Flowers: sepals 5-7, white, tinged purple (rarely abaxially blue proximally, white distally, and adaxially white), ovate to obovate, rarely elliptic, 15-30 × 10-17(-19) mm, abaxially hairy, adaxially glabrous; stamens 150-200. Heads of achenes spheric, rarely cylindric; pedicel 15-20(-22) cm. Achenes: body ellipsoid, 3-4 × ca. 1.5 mm, not winged, villous; beak curved or recurved, reflexed with age, (18-)20-40(-50) mm, long-villous, plumose. 2n=16.


Phenology: Flowering spring–summer (May–Aug/Sep).
Habitat: Gravelly, rocky slopes, moist meadows
Elevation: 500-3700 m

Distribution

V3 785-distribution-map.gif

Alta., B.C., Calif., Idaho, Mont., Oreg., Wash.

Discussion

W. J. Hooker (1829) included Anemone occidentalis in his concept of Anemone alpina Linnaeus.

The Thompson Indians and the Okanagan used decoctions prepared from the roots of Anemone occidentalis to treat stomach and bowel troubles (D. E. Moerman 1986).

Selected References

None.

Lower Taxa

None.

... more about "Anemone occidentalis"
Bryan E. Dutton +, Carl S. Keener +  and Bruce A. Ford +
S. Watson +
Western pasqueflower +, mountain pasqueflower +  and pulsatille +
Alta. +, B.C. +, Calif. +, Idaho +, Mont. +, Oreg. +  and Wash. +
500-3700 m +
Gravelly, rocky slopes, moist meadows +
Flowering spring–summer (May–Aug/Sep). +
Proc. Amer. Acad. Arts +
Anemone occidentalis var. subpilosa +  and Pulsatilla occidentalis +
Anemone occidentalis +
species +