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Trees to 14(-30) m; trunk 30-50(-70) cm in diam. Bark white-gray, with conspicuous furrows and large leaf-scars; puberulous to nearly glabrous, lenticels conspicuous; branches unarmed. Petiole 1-8 cm; leaf blade elliptic, oblong, or ovate, (7-)10-20(-30) × (4-)8-15(-20) cm, papery or membranous, puberulous or glabrescent, lateral veins 8-10 pairs, base rounded or slightly cordate, mostly oblique, margin entire, apex acute to acuminate. Cymes terminal, 1-4 × 3-5 cm; peduncle ca. 1.5 cm, with light brown hairs. Flowers bisexual. Pedicel 1-1.5 mm, apex with 2-4 oblong bracteoles. Perianth tube funnelform, ca. 4 mm, 5-lobed, with 5 rows of black glands. Stamens 6-10, exserted. Stigma fimbriate, included. Fruit clavate, ca. 1.2 cm × 2.5 mm, 5-ribbed, with sessile glands, without persistent perianth, rib with a row of viscid prickles, hairy between the ribs. Seed 9-10 × 1.5-2 mm. Fl. summer, fr. late summer-autumn.
Shrub or tree to 30 m high, subglabrous to puberulous. Stems without thorns, often with obvious leaf-scars. Leaves opposite or sometimes subopposite, petiolate, elliptic, oblong or ovate, to 30 cm long, to 18 cm wide, puberulous, glabrescent; petiole to 6 cm long. Inflorescences in terminal cymose clusters; flowers bisexual or (?)unisexual; peduncle c. 1.5 cm long. Perianth funnel-shaped, 5-lobed, c. 4 mm long. Stamens 6–10, exserted. Stigma fimbriate, not exserted. Fruit cylindrical to clavate, 8–14 mm long, 2–2.5 mm wide, ribbed; ribs with a row of viscid prickle-like hairs c. 0.5 mm long. See also Du Puy & Telford (1993: 100–102), Zich et al. (2020). This can be a most impressive tree, the short bole eventually having a very large girth, and the thick branches forming an enormous, spreading crown.
Tree or shrub to 28 m. tall; stems without thorns.. Leaves opposite or subopposite, elliptic, oblong or ovate, to 30 cm. long, 18 cm. wide, puberulous, glabrescent; petiole to 6 cm. long.. Inflorescences terminal cymose clusters; flowers bisexual or possibly unisexual; peduncle ± 1.5 cm. long.. Perianth funnel-shaped, 5-lobed, ± 4 mm. long.. Stamens 6–10.. Stigma fimbriate, not exserted.. Fruit cylindrical to clavate, 8–12 mm. long, 2–2.5 mm. wide, ribbed; ribs with soft viscid, prickle-like glandular hairs.
