English Lao
Botanical descriptions Habitat and ecology Distribution
| Diagnostic characters : | Deciduous trees, bark finely fissured. Leaves simple, opposite, broadly ovate, below glaucous. Primary nerves basally trinerved. Petiole long with two glands at the top. Inflorescence terminal, flowers with a tubular corolla, pinkish purple with yellow lower petal. Fruit a drupe seeds numerous. |
| Habit : | Deciduous tree 12 m. tall, up to 15 cm. in diameter. |
| Trunk & bark : | Bark finely fissured, grey brown, outer bark thin, brown, inner bark darkish brown, sapwood white. |
| Branches and branchlets or twigs : | Branches terete, tomentose, then turning glabrous, yellowish-grey, brownish when dry, strongly lenticellate. |
| Exudates : | Exudate absent. |
| Leaves : | Simple leaves, opposite, broadly elliptic 9-18 x 10-22 cm. in length, apex acuminate, base rounded, margin entire, young leaves brownish, blade coriaceous, glaucous below with many glands near the base. 3-primary basal veins. Midrib flat above, prominent below, secondary veins oblique, widely parallel, tertiary veins horizontal, petiole up to 6-7 cm. long. |
| Inflorescences or flowers : | Terminal inflorescence (flowers grouped in a panicle) tomentose yellow up to 20 cm. long, bract leaf like shaped, caducous, flower pink purple, lip, strikingly yellow, irregular flower, pedicels longer than 0.5 cm long. |
| Fruits : | Fruit solitary, drupe, globose or ovoid, glabrous. Young fruit green then turning yellow, partly lenticellate, about 3-4 cm. wide. |
| Seeds : | Seeds numerous. . |