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FOC | Family List | FOC Vol. 7 | Menispermaceae | Tinomiscium

1. Tinomiscium petiolare Miers ex J. D. Hooker & Thomson, Fl. Ind. 1: 205. 1855.

大叶藤 da ye teng

Tinomiscium tonkinense Gagnepain.

Woody vines. Stems with bark erosely fissured; branchlets and petioles longitudinally striate, exuding white latex when cut; young branches purplish tomentose. Petiole 5-12 cm, puberulent or glabrous; leaf blade broadly ovate, 10-25(-29) × 9-14(-20) cm, thinly leathery, base subtruncate or slightly cordate, margin entire or irregularly serrulate, apex acutely acuminate or sometimes cuspidate, palmately 3-5-veined, with 1-3 pairs of lateral veins, prominent abaxially. Inflorescences arising several together from protuberances on old stems, racemose, often pendulous, 5-12 cm, purplish ferruginous tomen- tose or puberulent. Male flowers: sepals with outer whorl minute, inner whorl 6(-8), narrowly obovoid-elliptic to elliptic, 3-4.5(-5) mm, glabrous except margins papillose; petals 6, obovoid-elliptic to elliptic, 2-2.5(-3.5) mm, deeply emarginate; stamens 6, 1.4-2.5(-3) mm, connective prolonged, mucronate and incurved. Female flowers: sepals and petals as in male; staminodes linear-oblong, ca. 3 mm; carpels 3, stigma shortly many lobed. Pedicel 1-2 cm. Drupes at first green with white spots, later white to yellow (or orange), with white latex, compressed ellipsoidal, ca. 4 × 1.7-2 × 1.3-1.5 cm, base rounded with short but distinct stalk; endocarp compressed ellipsoidal, 2-3.5 × 1-2 cm, surface obscurely to strongly rugose or rugulose, apex ± acute. Cotyledons extremely unequal, larger one 2-parted, base auriculate.

Forests. S Guangxi, S and SE Yunnan [Indonesia, Malaysia (peninsular), New Guinea, Thailand, C and N Vietnam].


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