Botanical Survey of India | Flora of India

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Tetrastigma dubium (M. Lawson) Planchon in DC., Monogr. Phan. 5: 437. 1887. Vitis dubia M. Lawson in Fl. Brit. India 1: 661. 1875. V. oxyphylla Wallich ex Prain, Bengal Pl. 337, 338. 1903.

Kh.: Soh-mei-boyet.

Slender, climbing shrubs; branches terete, sniate, glabrous, tendrils slender, simple. Leaves 3-5 -foliolate, membranous, glabrous; petioles 2.5-10 cm long; terminal leaflets elliptic-lanceolate to oblanceolate, 10-18 x 3-7 cm, acuminate at apex, rounded to subacute at base, dentate-serrate at margins; petiolules 1-2 cm long; lateral leaflets 6-14 x 2.5-6 cm, oblique at base, margins and apex as in terminal leaflets; petiolules 0.5-1 cm long. Inflorescences compact, corymbose cymes, 2.5-4 cm long, nearly glabrous to pubescent; peduncles ca 1 cm long. Flowers ca 2 mm long, pale yellow; pedicels 2-3 mm 10 long. Calyx 4-lobed; lobes triangular, acute. Petals ovate ca 1.8 x 1 mm, with a dorsal spur. Stamens ca 1 mm long; filaments flat. Disc cupular with undulate margin, thick, covering base of ovary. Ovary ca 1 mm long; style columnar; stigma 4-rayed. Berries ovoid, ca 1 cm across. Seeds oblong-ellipsoid, ca 7 x 3.5 mm; adaxial surface with a linear groove; abaxial surface with an oblong chalaza.

Fl. & Fr. : Feb. - March - May.

Distrib. India: West Bengal, Sikkim. Arunachal Pradesh, Assam, Manipur, Mizoram, Tripura and Meghalaya.

Nepal, Bangladesh, Myanmar and China.

Notes. In the Index Kewensis, Vitis oxyphylla Wallich ex Prain is cited as a synonym of V. bracteoiata Wallich. Examination of the types of these species showed that V. oxyphylla is conspecific with V. dubia M. Lawson [=Tetrastigma dubium (M. Lawson) Planehon].

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