Arbor circ. 8 m alta. Ramuli novelli pilis sparsis adpressis, mox glabrescentes, nigrescentes. Petiolus crassus, rugosus, adpresse tomentosus, 6-9 mm longus; lamina chartacea, supra glabra et nitida praeter costam hirsutam, subtus pilis sparsis adpressis, anguste elliptica vel elliptica, 12-18 cm longa et 4.5-7 cm lata, apice sensim angustata in acumen 1 cm longum, basi late cuneata vel aliquantum rotundata et decurrens; costa supra paulo impressa, nervi secundarii utrinque 16-18, supra prominentes, subtus conspicue prominentes, reticulum venularum utrinque manifestum. Inflorescentiae axillares, (1)—2-florae; pedicelli stricti, sparse adpresse tomentosi, 1.2-1.5 cm longi, circ. ad tertiam inferiorem articulati. Sepala ovata, acuta, in vivo viridia, circ. 6 mm longa, extus sericea, intus apicem versus pubescentia ceterumque glabra et in sicco nigra, mox reflexa. Petala oblongo-obovata, apice rotundata, brunnea, extus sericea, intus tomentosa, interiora ad basim macula triangulari glabra, interiora circ. 1.5 cm longa, exteriora circ. 2 cm longa. Stamina 1.2 mm longa, disco connectivi umbonato, minute papilloso. Pistilla numerosa, circ. 2.5 mm longa, ovaria pilosa, styli glabri, stigmata setulosa. (Fructus ignotus). Suriname: Near confluence of Paloemeu and Tapanahoni Rivers, 3°20' N Lat., 55°27' W Long., riverside (Wessels Boer 1302, fl. April, holotype U).