Clematis terniflora DC.
  • Syst. Nat.
  • Sweet autumn clematis, yam-leaved clematis

Cite taxon page as 'WFO (2021): Clematis terniflora DC. Published on the Internet; Accessed on: 02 Dec 2021'

General Information

Vines woody. Branches shallowly 4--10-grooved, puberulous or only nodes puberulous. Leaves pinnate, 5(--7)-foliolate; petiole 2.5--4.5 cm; leaflet blades ovate to narrowly ovate, sometimes ovate-lanceolate, 2.5--8 × 1--4.2 cm, papery to subleathery, both surfaces sparsely puberulous, glabrescent, base rounded, subcordate, or broadly cuneate, margin entire, apex acute to obtuse; basal veins abaxially ± prominent to nearly flat. Cymes axillary or terminal, usually many flowered; peduncle 1--7 cm; bracts linear, elliptic, or oblong, 0.8--3.5(--5) cm. Flowers 1.4--3 cm in diam. Pedicel 0.5--3 cm, puberulous or glabrous. Sepals 4, white, spreading, obovate-oblong to oblong, 5--15 × 2--6 mm, abaxially puberulous or glabrous, adaxially glabrous, margin abaxially velutinous, apex ± acute to obtuse. Stamens 3--7(--8) mm, glabrous; anthers narrowly oblong to oblong, 2--3 mm, apex obtuse or minutely apiculate. Ovaries pubescent. Style 4--7 mm, densely villous. Achenes orange-yellow, broadly elliptic to obovate, 4--9 × 2.5--6 mm, appressed pubescent; persistent style 1.2--4 cm, plumose. Fl. Jun--Aug, fr. Aug--Nov.

  • Provided by: [A].Flora Of CHina @
    • 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.

    • Provided by: [C].Flora of North America @
      • Source: [
      • 1
      • ]. 

      "Stem climbing, 2–3 m; herbage glabrous; lfls mostly 5, ± coriaceous, triangular-ovate to broadly ovate, obtuse to acuminate, entire or rarely with an entire lobe, rounded to cordate at the base, the terminal one long-stalked; fls numerous, white, 2–3 cm wide; sep densely pubescent along the margins and on the back; achenes glabrous or minutely appressed-hairy, 8 mm; mature style plumose, 2–3 cm; 2n=16, 48, 64. Native of Japan, commonly cult. and often escaped. July–Sept. (C. dioscoreifolia; C. maximowicziana; C. paniculata Thunb., not J. F. Gmel.)"

    • Provided by: [B].New York Botanical Garden
      • Source: [
      • 2
      • ]. 

      Other Local Names

      Sweet autumn clematis, yam-leaved clematis


       Information From

      Flora Of CHina @
      'Flora of China @ eFloras (2008). Published on the Internet [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
      • A Missouri Botanical Garden
      New York Botanical Garden
      Descriptions of plants should be attributed to the full citation for each individual article, chapter or book that is the source for each record, which should include the authors of original publication.
      • B Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
      Flora of North America @
      'Flora of North America @ eFloras (2008). Published on the Internet [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
      • C Flora of North America Association
      • D CC0 1.0 Universal (CC0 1.0).
      World Flora Online consortium
      World Flora Online Data. 2018.
      • E CC0 1.0 Universal (CC0 1.0).