Clematis terniflora |
Clematis addisonii |
|
---|---|---|
sweet autumn clematis, sweet autumn virginsbower, yam-leaf clematis, yam-leaf virgin's-bower |
Addison Brown's clematis, Addison Brown's leather-flower, Addison's leather-flower, Addison's virgin's-bower |
|
Stems | climbing with tendril-like petioles and leaf rachises, 3-6 m. |
usually ascending to erect, occasionally somewhat viny, 0.6-1 m, glabrous. |
Leaves | 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. |
all simple, blade often 1-pinnate on distal and middle leaves on vigorous plants 4-13 × 2-9.5 cm; leaflets 2-6 plus additional tendril-like terminal leaflet, ovate, unlobed, 1.5-6 × 1-4.5 cm, not prominently reticulate; surfaces abaxially glabrous and glaucous. |
Inflorescences | axillary, 3-12-flowered cymes or compound cymes or paniculate with cymose subunits. |
terminal and axillary, flowers solitary. |
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. |
ovoid to broadly urn-shaped; sepals purple or reddish purple, whitish toward tips, ovate-lanceolate, 1.2-2.5 cm, margins not expanded, thick, not crispate, tomentose, tips acute, spreading, abaxially glabrous. |
Achenes | broad, flat, conspicuously rimmed, minutely appressed-silky, sometimes sparsely so; beak 2-6 cm. |
bodies puberulent; beak 2.5-3.5 cm, plumose. |
2n | = 16. |
|
Clematis terniflora |
Clematis addisonii |
|
Phenology | Flowering summer (Jul–Sep). | Flowering spring–early summer. |
Habitat | Roadsides, thickets, and other secondary sites, edges of woods near creeks | Calcareous, dry woods, glades, rock outcrops |
Elevation | 0-1000 m (0-3300 ft) | 200-600 m (700-2000 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]
|
VA |
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.) |
Of conservation concern. Clematis addisonii is known only from Botetourt, Montgomery, Roanoke, and Rockbridge counties in western Virginia. Reports of this infrequent species from other southeastern states have been based on misidentified specimens (W. M. Dennis 1976). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Ranunculaceae > Clematis > subg. Clematis | Ranunculaceae > Clematis > subg. Viorna |
Sibling taxa | ||
Synonyms | C. dioscoreifolia, C. dioscoreifolia var. robusta, C. maximowicziana | Viorna addisonii |
Name authority | de Candolle: Syst. Nat. 1: 137. (1817) | Britton: Mem. Torrey Bot. Club 2: 28. (1890) |
Web links |