English   Lao   
Botanical descriptions Habitat and ecology Distribution
Diagnostic characters : | Deciduous trees, with branch scars on the trunk. Exudate resinous. Leaves clustered at the end of the branches, with stellate hairs on both sides, margins glandular dentate. Flowers white. Fruit a capsule, seeds winged. |
Habit : | Small to medium- sized deciduous tree, up to 25 m tall. Branches ascending to main trunk. Wood pale yellow or white. |
Trunk & bark : | Trunk straight, cylindrical, with branch scars along the trunk. Bark smooth, slightly fissured, lenticelled, brown to grey-brown, inner bark red. |
Branches and branchlets or twigs : | Twigs terete, brownish to dark brown, young shoots pubescent with reddish stellate hairs, becoming glabrous. |
Exudates : | Resinous. |
Leaves : | Simple leaves alternate and spiral, clustered at the end of the twig, 8-13 x 4-6 cm, obovate or broadly ovate to obovate-oblong, apex rounded or shortly acuminate, attenuate at base, margin dentate with glands, blade membranous when young becoming papery or coriaceous when mature, glabrescent with stellate hairs on both side, blackish drying. Midrib canaliculated above, primary vein single, secondary veins oblique to the midrib, widely parallel, tertiary veins reticulate. Petiole glabrescent with fawn stellate hairs. Stipules absent. |
Inflorescences or flowers : | Flowers terminal or axillary, grouped in panicle or condensed racemes, all parts covered by fawn stellate hairs. |
Fruits : | Fruit is a capsule, 1-2.5 by 0.6 -1.2 cm, dark brown. |
Seeds : | Seeds numerous, winged, orange. |