Ongokea

Glabrous, +/- dioecious trees with a straight bole; branches compressed, 2-winged. Leaves elliptic, base cuneate, apex apiculate. Flowers unisexual or bisexual. Calyx short, cup-shaped, 4- or 5-dentate. Petals 4 or 5, valvate, +/- linear, recurved to coiled; fleshy alternipetalous glands present between petals and stamens. Stamens epipetalous; filaments and anthers united into a tube completely enclosing gynoecium except for stigma; anthers opening by annular pores. Ovary 1-locular with 1 or 2 ovules pendent from an erect free-central placenta; style filiform, ending in a pointed stigma. Fruit a drupe opening by 2 or 3 valves at maturity, almost completely hidden inside much accrescent calyx; exocarp smooth; mesocarp fleshy, surrounding thick, hard endocarp except at apex. Seed solitary, globose or ovoid, yellow.