|Standard Cyclopedia of Horticulture|
Parthenocissus (Greek, parthenos, virgin, and kissos, ivy; translation of its French name). Syn. Quinaria, Psedera. Vitaceae. Woody vines planted chiefly for their handsome foliage.
Deciduous or rarely evergreen shrubs climbing by means of tendrils with adhesive tips, rarely these tips not developed: bark with lenticels; pith white: lvs. alternate, digitate or 3-lobed, long-petioled : fls. in peduncled compound cymes opposite to the lvs., often crowded at the end of the branches and forming panicles, perfect, rarely polygamous; calyx minute, petals 5, rarely 4, spreading; stamens 5 or 4; style short and thick; a distinct disk wanting; ovary 2-celled, each cell with 2 ovules: fr. a 1-4-seeded berry.—About 10 species in N. Amer.Mex, E. Asia, and Himalayas. Formerly usually classed with Ampelopsis, which see for the differentiating characters between the allied genera.
These are high-climbing vines with handsome three- to seven-foliolate or three-lobed leaves assuming beautiful tints in autumn and with small greenish flowers in cymes or panicles followed by bluish black or black berries. They are particularly valuable as they cling firmly to walls and trees by means of adhesive tips of the tendrils without any other support. P. quinquefolio, P. vitacea, and P. tricuspidata are hardy North, while the other species are more or less tender; P. Henryana, may be grown in the greenhouse for its beautiful foliage. In humid and good soil all species grow vigorously and soon cover large spaces. Propagation is by seeds or by hardwood cuttings or by layers, but P. tricuspidata and its varieties are usually grown from greenwood cuttings.
P. heptaphylla, Small (P.texana, Rehd. A. quinquefolia var. hepta- phylla. Bailey. A. heptaphylla, Buckl.). High-climbing: tendrils with 2-4 branches without disks: lfts. usually 7, oblong-obovatc, cuneate at the base, coarsely serrate, 1 l/2-2 1/2 in. long: cymes dichotomous, opposite the lvs. Texas. S.T.S. 1:90.—P. himalayana, Planch. (Ampelopsis himalayana. Royle). Allied to P. tricuspidata: lfts. 3, ovate to oblong-ovate, the lateral ones rounded or subcordate at the base, coarsely serrate, 2-5 in. long: cymes about as long as the lvs. Himalayas. Var. rubrifolia, Gagnep. (Vitis rubrifolia, Leveille & Vaniot). Lfts. smaller and broader, purplish while young: cymes smaller. W. China.—P. laetevirens, Rehd. Allied to P. quinquefolia. Tendrils with 5-8 slender branches: lvs. obovatc or elliptic, coarsely serrate, bright yellowish green on both sides, 2-4 in. long, glabrous or hairy on the veins below: fls-. in large terminal panicles. Cent. China.—P. Thomsonii, Planch. (Vitis rubrifolia, Laws. P. Henryana var. glaucescens, Diels & Gilg. Ampelopsis Thomsonii, Hort.). Tendrils with 3-5 disk-bearing branches: lfts. 5, slender-stalked, elliptic- ovate to elliptic-oblong, cuneate, serrate, glabrous or slightly pubescent on the veins beneath, bluish green, 1 1/2-3 in. long: fls. in dichot-omous cymes 1 1/2-3 in. broad, opposite the lvs.: fr. black. Himalayas. Cent. China. Gn. 63, p. 203. J.H.S. 28, p. 216, fig. 184.—A very handsome slender vine; foliage purplish while young, and purplish red in fall. Tender. ALFRED REHDER. CH
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- Standard Cyclopedia of Horticulture, by L. H. Bailey, MacMillan Co., 1963