Volume 8 > Part 2 > Year 2007 > Page 371 > Euphorbiaceae > Macaranga

10. Macaranga hypoleuca (Rchb.f.& Zoll.) Müll.Arg.wfo-0000232011

in DC., Prodr. 15, 2: 992. 1866; Hook.f., Fl. Brit. Ind. 5: 448. 1887; Pax & K.Hoffm. in Engl., Pflanzenr. IV. 147. vii: 311. 1914; Ridl., Fl. Malay. Penin. 3: 300. 1924; Corner, Ways. Trees Malaya: 266. 1940; Airy Shaw, Kew Bull. 26: 289. 1972; Whitmore, Tree Fl. Malaya 2: 106. 1973; S.J.Davies, Harvard Papers Bot. 6: 407. 2001.— Mappa? hypoleuca Rchb.f. & Zoll., Linnaea 28: 309. 1856, Verhand. Natuurk. Vereen. Ned. Ind. 1: 30. 1856.

Accepted Name : This is currently accepted.

Description : Tree to 30 m high, to 40 cm dbh; twigs 7–12 mm in diam., apically slightly angular, glabrous or with scattered hairs near apex, densely glaucous, hollow, ant-inhabited. Bark greenish white. Stipules triangular, ca 10 by 7 mm, spreading, usually persistent, glabrous, glaucous. Leaves: petiole 10–25 cm long, rounded, glabrous, glaucous; blade broader than long to rounded, 10–22 by 12–30 cm, deeply trilobed to over ¾, central lobe slightly larger than laterals, rarely with extra basal lobes, base rounded, deeply to 1.5–4 cm peltate, margin ± entire, ferruginous hairy when young, white-glaucous below when mature. Staminate inflorescences erect panicles, 10–35 cm long, to 4 axis orders, base glabrous, densely glaucous, apex ferruginous hairy; bracteoles ovate, 2.5–4 by ca 3 mm, apex acute, margin finely toothed, ferruginous hairy. Staminate flowers ca 10–15 per cluster, ca 0.8 mm long, shortly pedicellate; sepals 3, fused, ferruginous hairy; stamens 1, anthers 4-locular. Pistillate inflorescences 5–15 cm long, 2 axis orders, branched from near base, branches short, glaucous. Pistillate flowers 2–3 mm long; calyx urceolate, glaucous, minutely hairy; ovary 3-locular; stigmas ca 1 mm long, free, persistent. Fruits subglobose, 5–6 by 6–8 mm, glaucous, two glandular ridges on each carpel wall, yellow, sticky; pedicel 3–11 mm, glaucous, ferruginous hairy. Seeds 3–4 mm in diam., ovoid, black, pitted, aril red.

Thailand : PENINSULAR: Trang, Songkhla, Yala, Narathiwat.

Distribution : Malay Peninsula (type), Sumatra, Borneo.

Ecology : Lowland forests.

Vernacular : Lo (ลอ)(Trang).