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3. Ampelopsis Michaux, Fl. Bor.-Amer. 1: 159. 1803.

[Greek ampelos, grapevine, and -opsis, similarity] [Greek ampelos, grapevine, and -opsis, similarity]

Lianas, climbing by tendrils, synoecious. Branches: bark adherent; pith white, continuous through nodes; tendrils 2-branched, without adhesive discs. Leaves simple or palmately compound. Inflorescences usually bisexual, leaf-opposed, corymblike cymes, sometimes compound. Flowers bisexual; calyx saucer-shaped, indistinctly undulate; petals 5, distinct; nectary adnate proximally to base of ovary, free distally, cup-shaped, slightly lobed; stamens 5; style cylindric, elongate. Berries rose violet, purple, blue, black, orange, or yellow. Seeds 1–4 per fruit. x = 10.

Species ca. 15 (3 in the flora): North America, Mexico, Asia; temperate to tropical regions.

1 Leaves palmately compound, or so deeply lobed as to appear compound, leaflets or leaf lobes (3 or)5.   3 Ampelopsis aconitifolia
+ Leaves simple   (2)
2 (1) Branchlets glabrous, green; leaf blades usually unlobed, sometimes shallowly 3-shouldered.   1 Ampelopsis cordata
+ Branchlets usually sparsely puberulent, sometimes becoming glabrate, purplish green; leaf blades usually shallowly, sometimes deeply, 3(–5)-lobed.   2 Ampelopsis glandulosa

Lower Taxa


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