Parthenocissus tricuspidata

(Siebold & Zuccarini) Planchon

in A. L. P. P. de Candolle and C. de Candolle, Monogr. Phan. 5: 452. 1887.

Common names: Boston or Japanese ivy vigne vierge tricuspidée
Basionym: Ampelopsis tricuspidata Siebold & Zuccarini Abh. Math.-Phys. Cl. Königl. Wiss. 4(2): 196. 1845
Treatment appears in FNA Volume 12. Treatment on page 16.

Lianas, high climbing. Tendrils 5–10-branched, with adhesive discs. Leaves usually simple, sometimes palmately compound on older plants; petiole usually longer than, sometimes ± equaling, blade; blade lustrous adaxially, ovate to cordate-ovate or cordate-orbiculate, 4.5–17 × 4–16 cm, 3-lobed or leaflets 3, thin, herbaceous, base truncate to slightly cordate, margins crenate to crenate-serrate, apex acute to short-acuminate, surfaces glabrous or abaxial veins puberulent. Inflorescences ± divergently branching, without distinct central axis. Flowers yellowish green. Berries globose, 5–8 mm diam. 2n = 40.

Phenology: Flowering Jun–Jul; fruiting Sep–Oct.
Habitat: Thickets, forest edges, disturbed places.
Elevation: 50–500 m.


V12 991-distribution-map.jpg

Introduced; Ont., Conn., D.C., Ill., Ind., Iowa, Ky., Maine, Mass., Mo., Nebr., N.J., N.Y., N.C., Ohio, Pa., S.C., Tenn., e Asia.


Parthenocissus tricuspidata has escaped from cultivation and become locally naturalized throughout much of eastern North America.

Selected References


Lower Taxa

Michael O. Moore† +  and Jun Wen +
(Siebold & Zuccarini) Planchon +
Ampelopsis tricuspidata +
Boston or Japanese ivy +  and vigne vierge tricuspidée +
Ont. +, Conn. +, D.C. +, Ill. +, Ind. +, Iowa +, Ky. +, Maine +, Mass. +, Mo. +, Nebr. +, N.J. +, N.Y. +, N.C. +, Ohio +, Pa. +, S.C. +, Tenn. +  and e Asia. +
50–500 m. +
Thickets, forest edges, disturbed places. +
Flowering Jun–Jul +  and fruiting Sep–Oct. +
in A. L. P. P. de Candolle and C. de Candolle, Monogr. Phan. +
Introduced +
Psedera +  and Landukia +
Parthenocissus tricuspidata +
Parthenocissus +
species +