Large trees to small trees. Buttresses present, or absent; short. Spines absent. Stilt roots absent. Bark brown; not peeling in strips. Slash white, cream, yellow. Vertical stripes in the inner bark or wood absent. Odor absent. Exudate absent. Terminal buds not enclosed by leaves.
Complex hairs absent. Stinging hairs absent. Mature twig indumentum absent.
Leaves spiral; not scale-like; simple, or compound; pinnate; without a terminal leaflet, or with a terminal leaflet; leaflets alternate; all of the same type; not modified into spines; coriaceous; not gland-dotted; very asymmetric at the base, or symmetric at the base; not dissected; smooth margined. Epidermis not waxy. Venation pinnate. Secondary veins open, or closed (Reinwardtiodendron humile); prominent, or not prominent, but visible. Smallest veins prominent, or not prominent, but visible; net like. Intramarginal vein present, or absent. Stalk of blade less than a quarter the length of the blade; not winged; attached to base of leaf blade; not swollen. Stipules absent. Domatia present, or absent; appearing as hair tufts; scattered along midrib. Basal glands absent. Hairs on mature leaf present, or absent; dense, or sparse.
Inflorescences present; axillary; on an unbranched axis, or on a branched axis; specialized inflorescence units absent; numerous and persistent inflorescence bracts absent. Flowers bisexual; not stalked, or stalked; about 0.5 cm long or across; round; with male or female parts not raised on a column. Hypanthium absent. Disk absent. Perianth present; with distinct calyx and corolla whorls. Sepals 5; partially joined; not persistent in fruit; not growing any further after flowering. Epicalyx absent. Petals present; 5; free; not fleshy; deciduous; not stalked; entire. Stamens 10; filaments present; joined (in a tube); free of the perianth; of different sizes; diplostemonous. Anthers 2 loculed; attached by the base; awned; dehiscing by long slits. Ovary superior. Carpels joined; 5. Locules 5. Styles solitary. Stigmas 2-5 lobed; distinctive; head shaped. Fruit berry-like; fleshy; not multiple; not splitting; not enclosed in, or sitting on, fleshy perianth parts; wingless. Seeds 1-5 per fruit; less than 5 mm to about 1 cm long; wingless; uniform in cross-section; aril absent; non-endospermic.
Unifoliate or pinnate leaves; anthers in two whorls, one inserted above the other in the staminal tube, the anthers with a small bristle above. Taxon images: reinw.gif
Cite this publication as: Jarvie, J.K. and
Ermayanti (1996 onwards). `Tree Genera of Borneo - Descriptions and
Dallwitz (1980) and Dallwitz, Paine and Zurcher (1993) should also be cited.