Clematis occidentalis
Prodr. 1: 10. 1824.
Common names: Purple clematis clématite occidentale
Endemic
Basionym: Atragene occidentalis Hornemann Hort. Bot. Hafn. 2: 520. 1815
Treatment appears in FNA Volume 3.
Stems viny, climbing or trailing (plants scarcely viny perennials in var. dissecta). Leaf-blade 1-ternate (or terminal leaflet sometimes ternate in var. dissecta), ± firm but not succulent; leaflets lanceovate to triangular or suborbiculate, lobed or unlobed, margins entire or toothed. Flowers: sepals violet-blue, reddish violet, or white, lanceolate to ovate or elliptic-oblong.
Distribution
Alta., B.C., N.B., Ont., Que., Sask., Yukon, Colo., Conn., Del., Idaho, Ill., Iowa, Maine, Mass., Md., Mich., Minn., Mont., N.C., N.H., N.J., N.Y., Oreg., Pa., R.I., Utah, Va., Vt., W.Va., Wash., Wis., Wyo.
Discussion
Varieties 3 (3 in the flora).
Selected References
None.
Lower Taxa
Key
| 1 | Leaflets lobed or unlobed, margins entire or crenate-serrate (or terminal leaflet sometimes ternate); stems tufted or, if viny, up to 0.5(–1.5) m. | Clematis occidentalis var. dissecta |
| 1 | Leaflets unlobed or some 1–3-lobed, margins entire or shallowly serrate; stems ± viny, climbing or trailing, 0.25–3.5 m. | > 2 |
| 2 | Sepals reddish violet, rounded-mucronate to nearly acuminate. | Clematis occidentalis var. occidentalis |
| 2 | Sepals violet-blue to pale blue, rarely white, usually distinctly acuminate. | Clematis occidentalis var. grosseserrata |
"thin" is not a number.
... more about "Clematis occidentalis"
flattened +
petaloid +
dehiscing +
sterile +
flattened +
reduced +
terminal +
absent +
plumose +
anther-bearing +
absent +
scale-like;leaflike +
sepaloid +
absent +
aggregated +
globose;cylindric +
1-many-flowered +
small +
abundant +
pubescent +
flattened +
1-many-flowered +
symmetric +
nodding +
bisexual +
flattened-ellipsoid;terete;flattened-ellipsoid;terete;lenticular +
1[-2]-flowered +
1-ternate +
undivided +
opposite +
cauline +
pubescent +
toothed;entire +
absent +
1-many-flowered +
bractless +
hypogynous +
widely bell-shaped;rotate +
distinct +
absent +
conspicuous +
0;26 +
reduced +
tendril-like +
absent +
simple +
Prodr. +
1824 +
elongate +
1;many +
petaloid +
spurred +
not connivent +
white;reddish violet;white;reddish violet;violet-blue +
not persistent +
distinct +
veined +
Endemic +
distinct +
many +
absent +
unarmed +
trailing +
absent +
persistent +
absent +
Clematis occidentalis +
Clematis subg. Atragene +
species +
perennial +
herbaceous +
rhizomatous +
woody +