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.

"broadened" is not a number.

... more about "Anemone occidentalis"
Bryan E. Dutton +, Carl S. Keener +  and Bruce A. Ford +
S. Watson +
distinct +
cuneate +
4 cm40 mm <br />0.04 m <br /> (5 cm50 mm <br />0.05 m <br />) +
reflexed +  and recurved +
rudimentary +
long-villous +
plumose +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
ellipsoid +
1.5 cm15 mm <br />0.015 m <br /> (?) +
globose;cylindric +
ascending;vertical +
Western pasqueflower +, mountain pasqueflower +  and pulsatille +
2-9-flowered +
Alta. +, B.C. +, Calif. +, Idaho +, Mont. +, Oreg. +  and Wash. +
500-3700 m +
sessile +  and pedicellate +
showy +  and inconspicuous +
0 cm0 mm <br />0 m <br /> (60 cm600 mm <br />0.6 m <br />) +
stalked +, sessile +  and aggregate +
ovoid;obovoid +
Gravelly, rocky slopes, moist meadows +
cylindric;spheric +
axillary +  and terminal +
petiolate +, compound +  and simple +
whorled +, opposite +  and alternate +
pinnatifid +  and dissected +
palmate +  and pinnate +
pinnatifid;pinnatifid;dissected +
20 cm200 mm <br />0.2 m <br /> (22 cm220 mm <br />0.22 m <br />) +
15 cm150 mm <br />0.15 m <br /> (20 cm200 mm <br />0.2 m <br />) +
glabrate +  and villous +
distinct +
conspicuous +
reduced +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
8 cm80 mm <br />0.08 m <br /> (12 cm120 mm <br />0.12 m <br />) +
6 cm60 mm <br />0.06 m <br /> (8 cm80 mm <br />0.08 m <br />) +
Flowering spring–summer (May–Aug/Sep). +
Proc. Amer. Acad. Arts +
not arillate +  and stalked +
1.7 cm17 mm <br />0.017 m <br /> (1.9 cm19 mm <br />0.019 m <br />) +
tinged purple;white +
not persistent +
distinct +
glabrous +  and hairy +
5 +  and 7 +
ovate +  and obovate +
0.35 cm3.5 mm <br />0.0035 m <br /> (4 cm40 mm <br />0.04 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
60 cm600 mm <br />0.6 m <br /> (75 cm750 mm <br />0.75 m <br />) +
10 cm100 mm <br />0.1 m <br /> (60 cm600 mm <br />0.6 m <br />) +
persistent +
villous;villous +
Anemone occidentalis var. subpilosa +  and Pulsatilla occidentalis +
Anemone occidentalis +
species +
petiolulate;petiolulate +
6 cm60 mm <br />0.06 m <br /> (8 cm80 mm <br />0.08 m <br />) +
2.5 cm25 mm <br />0.025 m <br /> (7 cm70 mm <br />0.07 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
2-9-flowered +
herbaceous +  and woody +