Large trees to small trees. Buttresses absent. Spines absent. Stilt roots absent. Bark brown; not peeling in strips. Slash red, brown. Vertical stripes in the inner bark or wood absent. Odor absent. Exudate present; white; flowing; not blackening on exposure to air. Terminal buds not enclosed by leaves.
Complex hairs absent. Stinging hairs absent. Mature twig indumentum absent.
Leaves spiral; not scale-like; simple; all of the same type; not modified into spines; coriaceous; not gland-dotted; symmetric at the base; not dissected; smooth margined. Epidermis not waxy. Venation pinnate. Secondary veins open; prominent to not prominent, but visible. Smallest veins not prominent, but visible to not visible; ladder like. Intramarginal vein absent. Stalk of blade less than a quarter the length of the blade; not winged; attached to base of leaf blade; not swollen, or swollen; swollen at one end. Stipules present; free from one another; laterally placed; not encircling the twig; scale-like; not fringed; small; not persistent. Domatia absent. Basal glands absent. Hairs on mature leaf absent.
Inflorescences present; on the trunk or branches; on an unbranched axis; specialized inflorescence units absent; numerous and persistent inflorescence bracts absent. Flowers bisexual; stalked; about 0.5 cm long or across to to about 3 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 6 (3+3 arrangement); free; persistent in fruit; not growing any further after flowering. Epicalyx absent. Petals present; 6; all joined; not fleshy; deciduous; not stalked; entire. Stamens 18; filaments present; joined; joined to the perianth; all equal in size; triplostemonous. Anthers 2 loculed; attached along the side to attached by the base; not awned; dehiscing by long slits. Ovary superior. Carpels joined; 6. Locules 6. Styles solitary. Stigmas 1 lobed; not distinctive. Fruit berry-like; fleshy; not multiple; not splitting; not enclosed in, or sitting on, fleshy perianth parts; wingless. Seeds 1 per fruit; about 1 cm long to much more than 1 cm long; wingless; uniform in cross-section; aril absent; non-endospermic.
Small to large trees; inflorescences from branches or trunk; stamens united in a tube. Taxon images: aulandra.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.