Monographs Details: Clusia crassifolia Planch. & Triana
Authority: Maguire, Bassett & Wurdack, John J. 1958. The botany of the Guayana Highland--Part III. Mem. New York Bot. Gard. 10: 1-156.
Description:Species Description - Small tree to 10 m high with scanty or moderately copious whitish latex; branehlets stout, subterete, subsucculent, considerably wrinkling when dry, the internodes 1.5—4.0 cm long; petioles 12-20 mm long, broadly winged; blades thickly coriaceous, broadly obvate, 10-15 (18) cm long, (6) 7-9 cm wide, the apex rounded to subtruncate, the base cuneate, the midrib very prominent, extending to the apex, the lateral veins prominulous, 4-5 mm apart, ascending at a 45-50° angle and collected in a marginal nerve 2-3 mm from the hyaline revolute margin; inflorescence terminal, compact, 3-12-flowered, the peduncle coarse, 2-3 cm long, the bracts 8-14 mm long, oblong- or obovate-oblong, keeled, obtuse, searious-margined; sepals 7, the lowermost pair decussate, the upper 5 imbricate, orbicular-obovate, 10-12 mm long, conspicuously white-scarious-marginate; petals normally 8, cuneate-obovate, 2.5-3.0 cm long, 2.0-2.5 cm broad, white; stamens of the staminate flower numerous, the marginal stamens subsessile, 12-15-seriate, borne on a cupulate disc ca. 2 mm high, the interior stamens over the entire summit of the receptacle, the filaments subulate 3-5 mm long, almost twice the thickness of the 2-4-mm-long anthers, the anthers 4-celled, laterally dehiscing by subterminal pores that extend to the middle of the anther; staminodia of the pistillate flower numtrous, ca. 5 mm long, anantherous, 2-3-seriate, affixed on a cupulate disc ca. 1 mm high; ovary 16-20-loeular, the locules multiovulate, the ovules horizontally spreading, biseriate; styles 16 or the same number as the locules, filiform, 5-6 mm long; stigmas apical, ovate-capitate, ca. 1 mm long.
Type: "Roraima," Schombitrgk 70!).