Mangabé, Guarumo macho, Viranjo Dioecious tree, 10-25 (30) m tall; trunk light brown, with irregular, horizontal rings; branchlets stout, hollow, defoliate except near apex; young parts bearing dense reddish-brown pubescence with minute branched trichomes (appearing papillate) and usually also golden, pilose, deciduous pubescence especially around stipule scars and on stipules; bark soft; sap clear or light yellow in trunk, turbid or milky usually turning black in younger parts. Leaves spiral, crowded at apex of branchlets; petioles mostly 10-25 cm long, terete, hollow, longitudinally striate or grooved, with minute reddish-brown trichomes interspersed with longer, +/- hispid pubescence; stipules amplexicaul, 7-15 cm long, caducous, the pubescence dense, minute, reddish-brown, often also golden-pilose; blades ovate in outline, entire to irregularly sinuate with (3) 5 (7) deep lobes, usually abruptly short-acuminate at apex, deeply cordate at base, mostly 20-45 (50) cm long and 20-50 cm wide, asperous above with minute trichomes on surface and longer hispid pubescence on midribs of lobes, the pubescence below dense, white, arachnoid-tomentose interspersed with sparse hispid bristles especially on veins, the veins parallel, raised and darker than surface below, the parallel tertiary veins connecting the major lateral veins prominulous below. Inflorescences upper-axillary, repeatedly cymose; inflorescence branches, pedicels, and pistillate flowers reddish-brown granular-pubescent; flowers unisexual, sessile; staminate flowers sessile or borne on a thick pedicel; perianth deeply 3- or 4-lobed, ca 1 mm long; stamens 3 or 4; anthers ovate, yellowish. Pistillate flowers borne on a stout pedicel about as long and as broad as the flower; perianth ovoid-tubular, 3.5-4 mm long, with a small opening at apex; stigmas peltate-discoid, papillate, exserted. Drupes ovoid, 1-1.5 cm long, bearing minute reddish-brown pubescence, capped by the persistent, discoid stigma, purplish-black and juicy at maturity. Croat 8097, 8100. Mature plants uncommon; seedlings common in the forest. Mature plants are locally common along Conrad Trail. Flowers in the early dry season. The fruits mature in the late dry season.