Clematis occidentalis |
Clematis versicolor |
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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 |
manycolor virginsbower, pale clematis, pale leather flower |
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Stems | viny, climbing or trailing (plants scarcely viny perennials in var. dissecta). |
viny, to 5 m, glabrous or sparsely pubescent. |
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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. |
blade 1-pinnate; leaflets 8-10 plus additional tendril-like terminal leaflet, elliptic to ovate, usually unlobed, occasionally 2-3-lobed, 2-8 × 1.5-6.5 cm, leathery, abaxially and adaxially prominently reticulate; surfaces abaxially glabrous and glaucous. |
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Inflorescences | axillary, 1-7-flowered. |
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Flowers | sepals violet-blue, reddish violet, or white, lanceolate to ovate or elliptic-oblong. |
broadly urn-shaped; sepals abaxially pale lavender to reddish purple, grading to pale green toward tip, narrowly ovate, 1.5-3 cm, margins not expanded, thick, not crispate, tomentose, tips acute, slightly spreading, glabrous. |
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Achenes | bodies appressed-pubescent; beak (3-)5-6 cm, plumose. |
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2n | = 16. |
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Clematis occidentalis |
Clematis versicolor |
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Phenology | Flowering spring–summer (Jun–Aug). | |||||||||
Habitat | Calcareous outcrops, sandy soils, dry woods and thickets, barrens, and roadsides | |||||||||
Elevation | 30-100 m (100-300 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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AL; AR; KY; MO; OK; TN; TX
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Discussion | Varieties 3 (3 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 > Clematis > subg. Atragene | Ranunculaceae > Clematis > subg. Viorna | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | Atragene occidentalis | Viorna versicolor | ||||||||
Name authority | (Hornemann) de Candolle: Prodr. 1: 10. (1824) | Small ex Rydberg: in N. L. Britton, Man. Fl. N. States, 421. (1901) | ||||||||
Web links |
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