Clematis occidentalis |
Clematis baldwinii |
|||||||||
---|---|---|---|---|---|---|---|---|---|---|
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 |
pine-hyacinth, pine-woods clematis |
|||||||||
Stems | viny, climbing or trailing (plants scarcely viny perennials in var. dissecta). |
erect, 2-6 dm, nearly glabrous to moderately 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 unlobed or 2-3-lobed, occasionally divided into 3-5 leaflets; leaflet blades or lobes linear to narrowly elliptic-lanceolate, or unlobed leaf blades elliptic to ovate, 1.5-10 × 0.2-2.5(-3.5) cm, thin, not prominently reticulate; surfaces glabrous, not glaucous. |
||||||||
Inflorescences | terminal, flowers solitary; bracts absent or sometimes distal pair of leaves smaller, bractlike. |
|||||||||
Flowers | sepals violet-blue, reddish violet, or white, lanceolate to ovate or elliptic-oblong. |
narrowly bell-shaped; sepals uniformly violet-blue, oblong-lanceolate, 2-5.5 cm, margins narrowly expanded distally to ca. 1 mm wide, thin, crispate, proximally tomentose, glabrous where expanded, distally ± tomentose, tips acuminate, spreading to recurved, abaxially glabrous. |
||||||||
Achenes | bodies long-pubescent; beak 6-10 cm, plumose. |
|||||||||
2n | = 16. |
|||||||||
Clematis occidentalis |
Clematis baldwinii |
|||||||||
Phenology | Flowering all year. | |||||||||
Habitat | Sandy, flat pine woods | |||||||||
Elevation | 0-50 m (0-200 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
|
FL
|
||||||||
Discussion | Varieties 3 (3 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
The long peduncles (10-30 cm) elevating the flowers well above the leaves are unique to Clematis baldwinii among the simple-leaved species of Clematis subg. Viorna in the flora. Broad-leaved, large-flowered plants have been segregated as C. baldwinii var. latiuscula, but many intermediates connect the extremes, and flower size is not well correlated with leaf shape. As noted by C. S. Keener (1975), leaf shape appears to be uncorrelated with distribution; collections from a single population often include broad- and narrow-leaved plants. (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 | C. baldwinii var. latiuscula, Viorna baldwinii | ||||||||
Name authority | (Hornemann) de Candolle: Prodr. 1: 10. (1824) | Torrey & A. Gray: Fl. N. Amer. 1: 8. (1838) | ||||||||
Web links |
|