Clematis occidentalis |
Clematis lasiantha |
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blue clematis, clématite occidentale, Columbia bower, Columbia clematis, Columbia virgin's bower, purple clematis, purple virgin's-bower, rock clematis, western blue clematis, western blue virginsbower, western clematis |
chaparral clematis, pipestem, pipestem clematis |
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Stems | viny, climbing or trailing (plants scarcely viny perennials in var. dissecta). |
scrambling to climbing, 3-4 m. Leaf blade 3-foliolate; leaflets ovate, largest leaflets usually 3-lobed, 1.5-6 × 1.5-5 cm; terminal leaflet occasionally 3-cleft, margins usually toothed; surfaces glabrous or sparsely silky. |
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Leaf | blade 1-ternate (or terminal leaflet sometimes ternate in var. dissecta), ± firm but not succulent; leaflets lance-ovate to triangular or suborbiculate, lobed or unlobed, margins entire or toothed. |
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Inflorescences | axillary, flowers solitary, rarely 3-flowered cymes. |
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Flowers | sepals violet-blue, reddish violet, or white, lanceolate to ovate or elliptic-oblong. |
unisexual; pedicel (including peduncle) stout, 3.5-11 cm; sepals wide-spreading, not recurved, white to cream, ovate or elliptic to obovate or oblanceolate, 10-21 mm, abaxially and adaxially pilose; stamens 50-100; filaments glabrous; staminodes absent or 50-100; pistils 75-100. |
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Achenes | asymmetric-ovate, not broadly orbiculate, 3-4 × 1.5-2 mm, not conspicuously rimmed, glabrous; beak 3.5-5.5 cm. |
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2n | = 16. |
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Clematis occidentalis |
Clematis lasiantha |
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Phenology | Flowering winter–spring (Jan–Jun). | |||||||||
Habitat | Chaparral, open woodlands | |||||||||
Elevation | 0-2000 m (0-6600 ft) | |||||||||
Distribution |
CO; CT; DE; IA; ID; IL; MA; MD; ME; MI; MN; MT; NC; NH; NJ; NY; OR; PA; RI; UT; VA; VT; WA; WI; WV; WY; AB; BC; NB; ON; QC; SK; YT
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CA; Mexico (Baja California)
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Discussion | Varieties 3 (3 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Clematis lasiantha is common in the Coast Ranges and the foothills of the Sierra Nevada of California. The Shasta used pounded stems or chewed or burned roots of Clematis lasiantha medicinally in the treatment of colds (D. E. Moerman 1986). (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 > Clematis > subg. Atragene | Ranunculaceae > Clematis > subg. Clematis | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | Atragene occidentalis | |||||||||
Name authority | (Hornemann) de Candolle: Prodr. 1: 10. (1824) | Nuttall: in J. Torrey and A. Gray, Fl. N. Amer. 1: 9. (1838) | ||||||||
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