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Clematis terniflora DC.
SWEET AUTUMN VIRGINSBOWER
Sweetautumn Clematis

Life   Plantae   Dicotyledoneae   Ranunculaceae   Clematis

Clematis terniflora, Yam-leaved Clematis
© Copyright Sheryl Pollock 2011 · 7
Clematis terniflora, Yam-leaved Clematis

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Clematis terniflora, Yam-leaved Clematis
© Copyright Sheryl Pollock 2011 · 5
Clematis terniflora, Yam-leaved Clematis
Clematis terniflora
© Copyright Bobby Hattaway 2011 · 5
Clematis terniflora

Clematis terniflora
© Copyright Bobby Hattaway 2011 · 5
Clematis terniflora
Clematis terniflora
© Copyright Bobby Hattaway 2011 · 5
Clematis terniflora

Clematis terniflora
© Copyright Bobby Hattaway 2011 · 5
Clematis terniflora
Clematis terniflora
© Copyright Bobby Hattaway 2011 · 5
Clematis terniflora

Clematis terniflora
© Copyright Bobby Hattaway 2011 · 5
Clematis terniflora
Clematis terniflora
© Copyright Bobby Hattaway 2011 · 5
Clematis terniflora

Clematis terniflora
© Copyright Bobby Hattaway 2011 · 5
Clematis terniflora
Clematis terniflora
© Copyright Bobby Hattaway 2011 · 5
Clematis terniflora

Clematis terniflora
© Copyright Bobby Hattaway 2011 · 5
Clematis terniflora
Clematis terniflora
© Copyright Bobby Hattaway 2011 · 5
Clematis terniflora

Clematis terniflora
© Copyright Bobby Hattaway 2011 · 5
Clematis terniflora
Clematis terniflora
© Les Mehrhoff, 2008-2010 · 4
Clematis terniflora

Associates · map
FamilyScientific name @ source (records)
Agaricaceae  Phoma clematidis-terniflorae @ BPI (1)
Coleosporiaceae  Coleosporium clematidis @ BPI (8)
Halictidae  Lasioglossum imitatum @ AMNH_BEE (6)

Lasioglossum zephyrum @ AMNH_BEE (10)
Miridae  Spanagonicus albofasciatus @ NCSU_ENT (1)
Nabidae  Hoplistoscelis sordidus @ NCSU_ENT (2)
Reduviidae  Sinea spinipes @ NCSU_ENT (3)

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Delaware Wildflowers  •  Scientific names

Clematis terniflora DC. ( Clematis paniculata ) Japanese Virgin's-bower
Ranunculaceae — Buttercup family
Invasive non-native
Clematis terniflora
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September 2002

Guide to Clematis of Delaware

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FNA | Family List | FNA Vol. 3 | Ranunculaceae | Clematis

3. Clematis terniflora de Candolle, Syst. Nat. 1: 137. 1817.

Sweet autumn clematis, yam-leaved clematis

Clematis dioscoreifolia H. Léveillé & Vaniot; C. dioscoreifolia var. robusta (Carr) Rehder; C. maximowicziana Franchet & Savatier

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.

Flowering summer (Jul-Sep). Roadsides, thickets, and other secondary sites, edges of woods near creeks; 0-1000 m; introduced; Ont.; Ala., Ark., Conn., Fla., Ga., Ill., Ind., Kans., Ky., La., Md., Mass., Miss., Mo., Nebr., N.H., N.J., N.Y., N.C., Ohio, Okla., Pa., S.C., Tenn., Tex., Va., W.Va.; native to Asia (China, Korea, Japan).

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.

Updated: 2024-06-18 00:14:59 gmt
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