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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
© 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, Yam-leaved Clematis
© Copyright Sheryl Pollock 2011 · 5
Clematis terniflora, Yam-leaved Clematis
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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Following modified from Flora of Taiwan, National Taiwan University
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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
Prices Corner
September 2002

Guide to Clematis of Delaware

More information on this plant, from other sources.


Copyright David G. Smith

Delaware Wildflowers main page

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Clematis dioscoreifolia Levl & Vaniot - Virgin's Bower

Clematis dioscoreifolia plant

Family - Ranunculaceae

Stems - Twining to trailing or climbing, somewhat woody near base, herbaceous above, glabrous, carinate, much branched.

Leaves - Opposite, petiolate, twining, odd pinnately compound with typically 5-7 leaflets. Petiole to 4cm long, with an adaxial groove, sparse pubescent to glabrous. Leaflets ovate to ovate lanceolate or orbicular, some cordate at base, with petiolules to 3cm long and twining, entire, mucronate, deep green and glabrous above, dull green and sparse pubescent below, to +7cm long, +4cm broad.

Clematis dioscoreifolia leaf

Inflorescence - Axillary panicles. Peduncles and pedicels carinate, glabrous to sparse pubescent.

Flowers - Petals absent. Petaloid sepals 4, white to cream, to -2cm long, glabrous above, pubescent to sparse pilose below. Stamens +30. Filaments white, glabrous, to +/-8mm long. Anthers whitish to pale yellow, to 2mm long. Pistils 5, distinct, 8mm long, sericeous. Flowers fragrant. Achenes to 8mm long when mature, with persistent plumose style.

Clematis dioscoreifolia flower

Clematis dioscoreifolia flower

Flowering - July - October.

Habitat - Cultivated. Also escaped to waste ground, empty lots, roadsides.

Origin - Native to Japan.

Other info. - This is a showy and fragrant plant when in flower. The flowers are about 4-5cm broad and attract many good flying insects. The seeds are distributed by the wind and the plant escapes cultivation easily. It probably will become a pest in the future.
A more modern synonym is C. terniflora DC.

Photograph taken off Moore's Mill Road, Auburn, AL., 8-26-04.


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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.

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Updated: 2017-11-20 12:53:56 gmt
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