Anemone occidentalis
Anemone piperi
mountain pasqueflower, pulsatille, western anemone, western pasqueflower
Piper's anemone, Piper's windflower
10-60(-75) cm, from caudices, caudices ascending to vertical.
10-35 cm, from rhizomes, rhizomes primarily vertical, occasionally strongly ascending.
(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 2x-parted, pinnatifid; ultimate segments 2-3 mm wide.
(0-)1-2, ternate;
petiole 10-20 cm;
terminal leaflet sessile, rhombic, lanceolate, or oblanceolate, (1.5-)2.5-6 × (1-)2-4 cm, base narrowly cuneate, margins coarsely serrate to coarsely dentate on distal 1/2-2/3, apex acuminate to narrowly acute, surfaces pilose or glabrous;
lateral leaflets unlobed or sometimes 1x-lobed; ultimate lobes 10-19 mm wide.
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 2x-parted, pinnatifid; ultimate segments 2-3 mm wide.
1-flowered;
peduncle coarsely pilose distally;
involucral bracts 3, 1-tiered, ternate, ±similar to basal leaves, bases distinct;
terminal leaflet sessile, rhombic, lanceolate, or oblanceolate, (1.5-)2-5.5(-7) × (0.6-)1-2.5 cm, base narrowly cuneate, margins coarsely serrate to coarsely dentate on distal 1/2-2/3, apex acuminate to narrowly acute, surfaces pilose or glabrous;
lateral leaflets unlobed or sometimes 1x-lobed; ultimate lobes (5-)8-18 mm wide.
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.
sepals 5-7, white, rarely pinkish, elliptic-obovate to ovate, (6-)8-20 × 6-8 mm, glabrous;
stamens 35-55(-90).
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.
body ellipsoid to obliquely ovoid, 3-4 × 1.5-2 mm, not winged, villous;
beak straight or slightly curved, 0.5-1 mm, glabrous or proximally minutely puberulous, not plumose.
spheric, rarely cylindric;
pedicel 15-20(-22) cm.
nearly spheric;
pedicel (1.5-)2-5 cm.
=16.
Anemone occidentalis
Anemone piperi
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).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Plants of Anemone piperi from southeastern Washington and northeastern Oregon (i.e., the westernmost limits of the species) are sometimes intermediate between A. piperi and A. oregana. Although they possess vertical rhizomes characteristic of A. piperi, they have the bluish or pinkish sepals of A. oregana. These plants are best referred to A. piperi, pending detailed biosystematic analysis.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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