Anemone oregana |
Anemone deltoidea |
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blue windflower, bog anemone, Oregon anemone, Oregon windflower, western wood anemone, western wood anenome |
Columbia windflower, Columbian windflower, three-leaf anemone, western white anemone, windflower |
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Aerial shoots | 5-30(-35) cm, from rhizomes, rhizomes horizontal. |
(7.5-)10-30 cm, from rhizomes, rhizomes horizontal. |
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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. |
0-2, ternate; petiole 10-15 cm; terminal leaflet sessile, ovate to rhombic, (2.5-)3-5(-6) × (2-)2.5-3.5 cm, base slightly oblique to broadly cuneate, margins crenate to serrate on distal 2/3, apex acuminate, surfaces abaxially glabrous, rarely puberulous on veins, adaxially usually glabrous; lateral leaflets unlobed, rarely 1x-lobed; ultimate lobes (8-)10-20 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 sparsely hispid or glabrous; involucral bracts 3, 1-tiered, simple, ±similar to terminal leaflets of basal leaves, ovate, rarely rhombic, (2.5-)4-8 cm, bases distinct, broadly cuneate, margins crenate to serrate, or dentate on distal 2/3, apex acuminate, surfaces usually glabrous; lateral leaves unlobed or occasionally 1x-lobed; ultimate lobes 8-15 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 usually 5, white, ovate to obovate, rarely oblanceolate, (12-)15-25 × (8-)10-15(-20) mm, glabrous; stamens 100-120. |
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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 ovoid, swollen, 2.5-4 × 2-3 mm, not winged, proximally hispid, distally glabrous; beak straight to subulate, 0.5 mm or less, glabrous. |
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Heads of achenes | nearly spheric; pedicel (1.5-)2-5(-7) cm. |
spheric; pedicel (5-)7-12 cm. |
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2n | =14. |
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Anemone oregana |
Anemone deltoidea |
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Phenology | Flowering spring–summer (Apr–Jul). | |||||
Habitat | Open to deep woods | |||||
Elevation | 200-2000 m (700-6600 ft) | |||||
Distribution |
CA; OR; WA
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CA; OR; WA
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Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Reports of Anemone deltoidea in British Columbia are erroneous (H.J. Scoggan 1978-1979, vol. 3). Rhizomes 7m long and about 2 mm in diameter have been observed in Anemone deltoidea. (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 | ||||||
Name authority | A. Gray: Proc. Amer. Acad. Arts 22: 308. (1887) | Hooker: Fl. Bor.-Amer. 1: 6. (1829) | ||||
Web links |