Ampelopsis

Michaux

Fl. Bor.-Amer. 1: 159. 1803

Etymology: Greek ampelos, grapevine, and -opsis, similarity
Treatment appears in FNA Volume 12. Treatment on page 18. Mentioned on page 4, 20.
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.

Distribution

North America, Mexico, Asia, temperate to tropical regions.

Discussion

Species ca. 15 (3 in the flora).

References

None.

Key

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