Parthenocissus tricuspidata Boston ivy Vitaceae PATR*; Bx, bg, pb, up, vc; NY, hb; Q, cu; K; R;


Parthenocissus tricuspidata. Cuyamaca College Ornamental (Accessed 5/2014).

Parthenocissus tricuspidata is a woody vine. Tendrils short, many-branched, tipped with disks. 

Leaves alternate, to 20 cm wide, 3-lobed, sometimes 3-parted on young plants, margins often red (Gargiullo pers. obs.) lobe-tips pointed, margins coarsely toothed, leaf base round-lobed.

 Flowers greenish, small, inconspicuous, June-July. 

Fruit fleshy, blue-black with waxy bloom to 0.8 cm, dispersed by birds, Sept.-Oct. China, 

Wetland status: UPL. 

Frequency in NYC: Occasional. 

Origin: Japan (Rehder 1986). 

Habitat: Escaped from cultivation into forests, apparently shade tolerant.