Claoxylon longipetiolatum Kurz in J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 42(2): 244. 1873 & Forest Fl. Burma 2: 396. 1877; Hook.f., Fl. Brit. India 5: 413. 1887; Susila & N.P.Balakr. in Rheedea 5(2): 124, f.4. 1995.

Shrubs or trees, (3 -) 5 - 10 m tall, finely pubescent throughout. Leaves broadly elliptic, oblong-ovate to oblong-lanceolate, acute, obtuse, rounded or subcordate at base, acuminatecuspidate at apex, crenate and toothed with glands along margins, 20 - 40 x 9 - 18 cm, chartaceous, glabrous or pilose above, softly pubescent on nerves beneath; lateral nerves 6 - 10 pairs; petioles 4 - 12 (- 14) cm long. Male flowers: clustered in filiform 10 - 20 cm long spikes; bracts subulate, up to 1 mm long; flowers 4 - 6 mm across; pedicels 6 - 7 mm long; sepals 3, ovatelanceolate, 2 - 3 mm across; stamens 35 - 60, intermixed with glands or scales with a tuft of up to 0.5 mm long hairs; filaments 0.5 - 2 mm long; anthers parallel, globose 0.3 - 0.5 mm across. Female flowers not seen. Fruits deeply 3-lobed, covered with soft hirsute prickles.

Fl. Feb. - May; Fr. May - July (-Dec.).

Distrib. India: Frequent in clearing and open places, chiefly along tropical forests. West Bengal, Meghalaya and (?) Andaman & Nicobar Islands.

Myanmar.

Notes. Chromosome number: n = 54, 2n = 108 (Mehra & Hans, Taxon 18: 310 - 315. 1969; Hans, Taxon 22: 591 - 636. 1973).