Clematis occidentalis |
Clematis ligusticifolia |
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Columbia clematis, rock clematis, Columbia virgins-bower |
western clematis |
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Habit | Soft-hairy or sparsely woolly perennials with creeping or climbing, slender stems; plants scarcely viny in var. dissecta, found in the Wenatchee Mountains of Washington. | Strong, woody, dioecious climbing vine to 20 m. long. |
Leaves | Leaves opposite, ternate, firm but not succulent, the leaflets lance-ovate to triangular or sub-orbicular, lobed or unlobed, the margins entire or toothed. |
Leaves pinnately compound with 5-7 narrowly to broadly ovate-cordate leaflets 3-6 cm. long, coarsely few-toothed or lobed. |
Flowers | Flowers solitary, terminal on short axillary branches on naked peduncles 5-15 cm. long; sepals usually 4, ovate-lanceolate to elliptic-oblong, acuminate, 3.5-6 cm. long, violet-blue to pale blue; petals none; stamens numerous, the outer ones often sterile; styles 3-6 cm. long, plumose, persistent. |
Flowers in several-flowered bracteate panicles; sepals 4, creamy white, narrowly oblong-lanceolate, 6-15 mm. long; petals none; staminate flowers without vestigial pistils; pistillate flowers with numerous, sterile stamens. |
Fruits | Achenes short-pubescent. |
Achenes hairy; styles persistent, 2.5-5 cm. long. |
Clematis occidentalis |
Clematis ligusticifolia |
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Flowering time | May-July | June-September |
Habitat | Often in deep, fine soils in shady forest, also in cliffs and other rocky sites in open woods and thickets, at moderate to high elevations in the mountains. | River valleys and sagebrush desert to ponderosa pine forests. |
Distribution | Occurring east of the Cascades crest in Washington; British Columbia to Oregon, east to Saskatchewan and Wyoming.
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Chiefly east of the Cascades crest in Washington; British Columbia south to California, east to Oklahoma and the Dakotas.
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Origin | Native | Native |
Conservation status | Not of concern | Not of concern |
Sibling taxa | ||
Subordinate taxa | ||
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