Dipterocarpaceae Blume

Dipterocarpaceae, B. Verdcourt. Flora of Tropical East Africa. 1989

Morphology General Habit

Small to large usually resinous mostly buttressed trees; indumentum various but often of fasciculate hairs, frequently glandular

Morphology Leaves

Leaves alternate, simple, entire or sinuate at margin; stipules paired, large or small, persistent or soon falling

Morphology Reproductive morphology Flowers

Flowers ?, regular, in axillary or terminal branched panicles, racemose or less often cymose; bracts and bracteoles paired, persistent or soon falling

Morphology Reproductive morphology Flowers Calyx

Calyx persistent; lobes imbricate or valvate, free or fused at the base; 2–5 lobes usually accrescent into very distinct wings in fruiting state

Morphology Reproductive morphology Flowers Corolla

Corolla-lobes 5, contorted, connate at base or free

Morphology Reproductive morphology Flowers Androecium

Stamens 5 to over 100; filaments free or connate; anthers 2-thecous, introrse or laterally dehiscent

Morphology Reproductive morphology Flowers Gynoecium

Ovary superior or semi-inferior, partly unilocular or (2–)3–5-locular (4 in the sole S. American genus); ovules 2(–4) in each locule, axile or parietal

Morphology Reproductive morphology Fruits

Fruit indehiscent, usually 1-seeded with woody pericarp, usually with 2–5 persistent wing-like sepals but not accrescent in a few genera

Dipterocarpaceae, Hutchinson and Dalziel. Flora of West Tropical Africa 1:1. 1954

Morphology General Habit

Trees with resinous wood

Morphology Leaves

Leaves alternate, entire, penninerved; indumentum often of two kinds, of stellate hairs or rarely of peltáte scales; stipules mostly small and deciduous, sometimes very large and enclosing the young bud, rarely persistent, leaving an annular scar after falling away

Morphology Reproductive morphology Flowers

Flowers hermaphrodite, actinomorphic, fragrant, in axillary panicles

Morphology Reproductive morphology Flowers Calyx

Calyx-tube short or well developed, free or adnate to the ovary; lobes 5, imbricate or valvate, mostly greatly enlarged, wing-like, and ascending in fruit and then strongly nervose, rarely small and reflexed or spreading

Morphology Reproductive morphology Flowers Corolla

Petals 5, much contorted, free or slightly connate at the base, often hairy and inconspicuous

Morphology Reproductive morphology Flowers Androecium

Stamens rarely definite, hypogynous or subperigynous; filaments short, often dilated at the base; anthers 2-celled, opening lengthwise; connective mucronate or aristate or club-shaped

Morphology Reproductive morphology Flowers Gynoecium

Ovary inserted on the broad torus or slightly immersed in it, 3-celled; style subulate or variously thickened, entire or 3-lobed; ovules 2 in each cell

Morphology Reproductive morphology Fruits

Fruit free from or included in the enlarged calyx-tube, rarely closely adnate to it, indehiscent, usually 1-seeded

Morphology Reproductive morphology Seeds

Seeds without endosperm; cotyledons thick and equal or variously contorted