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FOC | Family List | FOC Vol. 12 | Vitaceae | Tetrastigma

42. Tetrastigma triphyllum (Gagnepain) W. T. Wang, Acta Phytotax. Sin. 17(3): 83. 1979.

菱叶崖爬藤 ling ye ya pa teng

Lianas, semiwoody. Branchlets terete, with longitudinal ridges; tendrils digitately 4-7-branched. Leaves 3-foliolate; petiole 1.5-9.5 cm; central petiolule 5-6 mm, lateral petiolules 3-4 mm; leaflets rhombic-oval or elliptic, 3-11 × 1.5-7 cm, lateral veins 6 or 7 pairs, veinlets inconspicuous, base of central leaflet cuneate, base of lateral leaflets asymmetric and subrounded, margin undulate with 6 or 7 teeth on each side, teeth apiculate, apex acuminate or acute. Compound umbel, pseudoterminal on lateral branches, base with 1 or 2 leaves, 2.5-5.5 cm; peduncle 1-3 cm. Pedicel 2-3 mm. Buds oval, 1.5-2.5 mm, apex rounded. Calyx shallow and saucer-shaped; teeth 4. Petals elliptic, 1.5-2.3 mm, apex pileate. Filaments filiform; anthers yellow, oblong, distinctly short and abortive in female flowers. Disk distinct and 4-lobed in male flowers, annular in female flowers. Ovary coniform, lower part adnate to disk; style inconspicuous; stigma expanded, 4-lobed. Berry spheroid, 7-10 mm in diam., 1- or 2-seeded. Seeds elliptic, base rostrate, apex rounded. Fl. Feb-Apr, fr. Jun-Nov.

● Forests, rocky gaps; 700-2000 m. Sichuan (Mianning), Yunnan.

1 Plants glabrous.   42a var. triphyllum
+ Branchlets, leaves, petioles, and pedicels densely pilose.   42b var. hirtum


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