Clematis terniflora |
|
---|---|
sweet autumn clematis, sweet autumn virginsbower, yam-leaf clematis, yam-leaf virgin's-bower |
|
Stems | climbing with tendril-like petioles and leaf rachises, 3-6 m. |
Leaf | blade pinnately 3- or 5-foliolate; leaflets ovate or broadly lanceolate to narrowly deltate, to 6.5 × 3.5 cm, margins entire; surfaces abaxially glabrous or very sparingly appressed-strigose on major veins. |
Inflorescences | axillary, 3-12-flowered cymes or compound cymes or paniculate with cymose subunits. |
Flowers | bisexual, often some unisexual (staminate) in same inflorescence; pedicel 1-3.5 cm, slender; sepals wide-spreading, not recurved, white, linear or elliptic to lanceolate or narrowly obovate, 0.9-2.2 cm, length ca. 2-3 times width, abaxially tomentose along margins, adaxially glabrous; stamens ca. 50; filaments glabrous; staminodes absent; pistils 5-10. |
Achenes | broad, flat, conspicuously rimmed, minutely appressed-silky, sometimes sparsely so; beak 2-6 cm. |
Clematis terniflora |
|
Phenology | Flowering summer (Jul–Sep). |
Habitat | Roadsides, thickets, and other secondary sites, edges of woods near creeks |
Elevation | 0-1000 m (0-3300 ft) |
Distribution |
AL; AR; CT; FL; GA; IL; IN; KS; KY; LA; MA; MD; MO; MS; NC; NE; NH; NJ; NY; OH; OK; PA; SC; TN; TX; VA; WV; ON; native to Asia (China, Korea, Japan) [Introduced in North America]
|
Discussion | Clematis terniflora is commonly cultivated as an ornamental. It is widely naturalized in the eastern United States. The name C. paniculata J. F. Gmelin was incorrectly used for this species by Thunberg in 1794. Some authors have recognized two or more varieties in this species, correlated with their distribution in Asia, but in the study by H.Hara (1975), all of the varietal names were reduced to synonymy. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 3. |
Parent taxa | Ranunculaceae > Clematis > subg. Clematis |
Sibling taxa | |
Synonyms | C. dioscoreifolia, C. dioscoreifolia var. robusta, C. maximowicziana |
Name authority | de Candolle: Syst. Nat. 1: 137. (1817) |
Web links |