Botanical Survey of India | Flora of India

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Viscum ovalifolium Wall. ex DC., Prodr. 4: 278. 1830; Hook.f., Fl. Brit. India 5: 225. 1886, p. p. V. orientale (auct. non Willd. 1806) Benth. in Hooker's London J. Bot. 2: 222. 1843; Danser in Bull. Jard. Bot. Buitenzorg, Ser. 3, 11: 466. 1931.

Monoecious, evergreen, partial parasites on stems and branches of host trees; stems slender to robust, up to 1.5 m long, sparingly branched, glabrous, flattened towards apical portion. Leaves normal, opposite, lanceolate, ovate, oblong or obovate, attenuate at base, tapering into a very short petiole, obtuse or subacute at apex, entire, coriaceous, dull on both surfaces, inequilateral, 5 - 9 x 2 - 3.5 cm, with 3 - 5 longitudinal nerves. Inflorescences usually ateral, at first single, sessile or subsessile, often a 3-flowered cyme with the middle flower female and laterals male; flowers enclosed in a navicular cup of bracts about 2 mm long. Male flowers: sessile, compressed longitudinally, ca 1 mm long; perianth lobes 4, triangular; stamens 4: anthers attached to tepals. Female flowers: oblong, 1.5 - 2 mm long, sessile; perianth lobes 4, triangular; ovary inferior; style short, conical; stigma capitate. Fruits suborbicular to ellipsoid, somewhat contracted at base, distinctly warty till ripening, 5 - 6 x ca 4 mm, covered by slightly enlarged conical style.

Fl. & Fr. Jan. - April.

Distrib. India: Assam, Manipur and Andaman & Nicobar Islands.

Bhutan, Myanmar, China, Thailand, Laos, Vietnam, Cambodia, Hongkong, Malaysia, Indonesia, Philippines and Queensland (Australia).

Pollen. Rounded, convex, almost spherical, subprolate, tricolporate. 39.7 - 31.4 μm (Feur & Kujit, Amer. J. Bot. 69: 1 - 12. 1982).

Chromosome no. n = 11 (Barlow, Proc. Linn. Soc. N. S. Wales 89: 268 - 272. 1964).

Host. Quercus incana.

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