Clematis
Family: Ranunculaceae
Clematis image
Frankie Coburn
  • Gleason & Cronquist
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Vascular plants of NE US and adjacent Canada
Sep petaloid, valvate in bud, commonly 4, sometimes more; pet none; staminodes present or absent; pistils numerous; fr a flattened achene, terminated by the elongate, persistent style; erect perennial herbs, or herbaceous or somewhat woody vines climbing by the prehensile lf-rachis, with opposite, simple or compound lvs and solitary or panicled, medium-sized to large fls, usually dioecious; x=8. (Atragene, Viorna) 300, cosmop. Species of the section Viorna are called Leather-flower or Curly heads.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

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Species within checklist: Flora of Federal Protected Areas, Desert West
Clematis alpina
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Clematis columbiana
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Clematis drummondii
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Clematis glaucophylla
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Clematis hirsutissima
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Clematis lasiantha
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Clematis ligusticifolia
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Clematis palmeri
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Clematis pitcheri
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Clematis pseudoalpina
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Clematis terniflora
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Clematis texensis
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Clematis versicolor
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Clematis virginiana
Image of Clematis virginiana