Volume 10 > Part 3 > Year 2010 > Page 317 > Anacardiaceae > Rhus

5. Rhus wallichii Hook.f.wfo-0001050704

Fl. Brit. Ind. 2: 11. 1876; Collett, Fl. Simal.: 105. 1921; Kanj., Fl. Un. Prov.: 145. 1927.

Accepted Name : Toxicodendron wallichii (Hook.f.) Kuntze
Revis. Gen. Pl. 154. 1891; T.Ming & A.Barfod in W.Zhengyi, P.H.Raven & H.Deyuan, Fl. China 11: 350. 2008.

Synonyms & Citations :

Description : Tree, 25 m high; branches spreading; with black juice; bark thin, grey; branchlets stout, with numerous linear brown, raised lenticels, yellowish-brown tomentose. Leaves 28–46 by 19–55 cm, pale green; petioles terete, pulvinate, 15–19 cm, rachis 18–28 cm; leaflets in 2–4, usually opposite, pairs, oblong to oblong-ovate or elliptic-lanceolate, lowermost pair oblique and broadly ovate, 10–18 by 5–11 cm, terminal largest, apex acuminate or abruptly acuminate, base rounded, subcordate, chartaceous, puberulous with pubescent midribs above, densely yellowish brown tomentose below, lateral nerves 15–24 per side, nearly straight, parallel; lateral petiolules 0.3–0.7 cm, terminal one ca 4 cm. Panicles racemose, 19–35 by 18 cm; bracts lanceolate, villous outside, 1.5 by 0.5 mm. Flowers scented, 3 by 4 mm; pedicels pubescent, 1–3 mm; calyx crateriform, puberulous, 1.2 by 1.5–2 mm, lobes ovate-oblong, obtuse, 0.8 mm; petals obovate or elliptic, white with purple veins, 2 by 1 mm; anthers oblong, 1 by 0.8 mm; ovary ovoid, villous tomentose, 0.5–1 mm in size; styles 3-fid. Drupes globose, minutely pubescent.

Thailand : NORTHERN: Chiang Mai (Doi Inthanon, Pha Mon).

Distribution : Temperate Himalayas (Kashmir), India (type), Nepal and Indonesia.

Ecology : Evergreen forests, near stream, ca 500 m alt. Flowering: March.

Uses: Juice corosive, causes dermatitis. Wood used for making handles of tools.