Anemone oregana |
Anemone berlandieri |
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blue windflower, bog anemone, Oregon anemone, Oregon windflower, western wood anemone, western wood anenome |
tenpetal anemone, tenpetal thimbleweed |
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Aerial shoots | 5-30(-35) cm, from rhizomes, rhizomes horizontal. |
(10-)30-50 cm, from tubers, rarely also from rhizomes, tubers vertical, rarely ascending. |
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Basal leaves | 0-1, ternate; petiole 4-20 cm; terminal leaflet sessile to petiolulate, oblanceolate to rhombic, oblong, or ovate, 1-5(-6) × 0.7-2.5(-3.5) cm, base narrowly cuneate, margins sharply serrate on distal 1/2(-2/3), apex acuminate to acute, surfaces strigose to nearly glabrous; lateral leaflets unlobed or 1x-lobed; ultimate lobes 0.4-10 mm wide. |
(1-)3-6(-9), 1-(nearly 2)-ternate; petiole 3-20 cm; terminal leaflet sessile, rarely petiolulate, ovate to obovate, 1-3(-6) × (0.4-)0.7-3(-4) cm, base broadly cuneate, margins crenate to serrate on distal 1/2, rarely on distal 2/3, apex obtuse to broadly acute, surfaces pubescent; lateral leaflets unlobed or 1x-lobed or -parted; ultimate lobes (6-)8-12 mm wide. |
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Inflorescences | 1-flowered; peduncle proximally glabrous, distally villous to pilose; involucral bracts 3, 1-tiered, ternate, ±similar to basal leaves, bases distinct; terminal leaflet sessile to petiolulate, oblanceolate to rhombic, oblong, or ovate, 1-8 × 0.8-3(-3.5) cm, bases narrowly cuneate to cuneate, margins crenate to serrate on distal 1/2(-2/3), apex acuminate to acute, surfaces abaxially glabrous or strigose, adaxially nearly glabrous to strigose; lateral leaflets unlobed or 1x-lobed; ultimate lobes 0.5-10 mm wide. |
1-flowered; peduncle villous; involucral bracts 3, borne above middle of scape at anthesis, 1-tiered, simple, dissimilar to basal leaves, obtriangular, 3-cleft, (1-)1.5-4(-5) cm, bases clasping, ±connate, margins incised throughout, apex narrowly acute to acuminate, surfaces pilose; segments primarily 3, broadly linear; lateral segments unlobed or occasionally 1x-lobed; ultimate lobes 1.5-2.5 mm wide. |
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Flowers | sepals 5-7(-8), blue to purple, reddish, or purple to pink (rarely nearly white or abaxially reddish, violet, or marginally purple, adaxially white), ovate, oblong, or elliptic, 10-20 × 5-8(-10) mm, glabrous; stamens 30-75. |
sepals (7-)10-17(-25), abaxially blue to violet, adaxially white, linear-oblong, rarely narrowly elliptic, (10-)15-20 × 2-3(-4) mm, abaxially hairy, especially toward base, adaxially glabrous or hairy toward base; stamens 60-70. |
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Achenes | body oblong to ellipsoid, 4-5 × 1.5-2 mm, not winged, puberulous to pilose, rarely glabrous; beak ±straight, (0.5-)1-1.5 mm, glabrous. |
body elliptic, flat, 2.7-3.5 × 2.2-2.5 mm, not winged, densely white-woolly; beak subulate, curved, 1-2.3 mm, hidden in achene indument, white tomentose, not plumose. |
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Heads of achenes | nearly spheric; pedicel (1.5-)2-5(-7) cm. |
cylindric; pedicel (7-)9-15(-28) cm. |
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2n | =16. |
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Anemone oregana |
Anemone berlandieri |
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Phenology | Flowering winter–spring (Feb–Apr). | |||||
Habitat | Open grasslands, prairies, hillsides, often limy substrate, also woods over thin shale | |||||
Elevation | 60-1100m (200-3600ft) | |||||
Distribution |
CA; OR; WA
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AL; AR; FL; KS; LA; MS; NC; OK; SC; TX; VA; n Mexico
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Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 3. | FNA vol. 3. | ||||
Parent taxa | Ranunculaceae > Anemone | Ranunculaceae > Anemone | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | A. heterophylla | |||||
Name authority | A. Gray: Proc. Amer. Acad. Arts 22: 308. (1887) | Pritzel: Linnaea 15: 628. (1841) | ||||
Web links |