Clematis occidentalis |
Clematis ochroleuca |
|||||||||
---|---|---|---|---|---|---|---|---|---|---|
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 |
curly-heads, erect silky leather-flower |
|||||||||
Stems | viny, climbing or trailing (plants scarcely viny perennials in var. dissecta). |
erect to ± sprawling, not viny, 2-7 dm,, sparsely to ± densely pilose. |
||||||||
Leaves | 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 narrowly to broadly ovate, unlobed or rarely few-lobed, 3-14 × (1.5-)2.5-8(-9.5) cm, ± leathery, reticulate adaxially; surfaces abaxially moderately silky-pilose with spreading hairs or rarely nearly glabrous, not glaucous. |
||||||||
Inflorescences | terminal, flowers solitary; bracts absent. |
|||||||||
Flowers | sepals violet-blue, reddish violet, or white, lanceolate to ovate or elliptic-oblong. |
narrowly urn-shaped; sepals pale yellow to pale purple, lanceolate, 1-3.5 cm, margins not expanded, thin, not crispate, tomentose, tip obtuse, spreading to recurved, abaxially silky-pubescent. |
||||||||
Achenes | bodies pilose, hairs appressed-ascending; beak yellowish brown to reddish brown, 3-6 cm, plumose. |
|||||||||
2n | = 16. |
|||||||||
Clematis occidentalis |
Clematis ochroleuca |
|||||||||
Phenology | Flowering spring. | |||||||||
Habitat | Dry to moist woods, thickets, roadsides, and other shady to open, ± disturbed sites, mostly on mafic substrates | |||||||||
Elevation | 0-500 m (0-1600 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
|
DC; GA; MD; NC; NJ; NY; SC; VA
|
||||||||
Discussion | Varieties 3 (3 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
In New York, Clematis ochroleucra is known only from Staten Island and, formerly, from western Long Island (Brooklyn). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
||||||||
Key |
|
|||||||||
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 ochroleuca | ||||||||
Name authority | (Hornemann) de Candolle: Prodr. 1: 10. (1824) | Aiton: Hort. Kew. 2: 260. (1789) | ||||||||
Web links |
|