Dichapetalum

Key to Dichapetalum species in Peninsular Malaysia 1 Leaves very narrowly linear-lanceolate, more than seven times longer than wide, less than 20 mm wide .. 6. D. salicinum sp. nov. Leaves elliptic, oblong or ovate, more than 20 mm wide ..................................................................................................................2 2 Young twigs, petiole and lower leaf surface hispid, hairs 1.5–2.5 mm long. Leaf base slightly cordate. Fruits densely shaggy........ .......................................................................................................................................................................................2. D. griffithii Young twigs, petiole and lower leaf surface pubescent, hairs to 0.8 mm long or glabrous. Leaf base attenuate, cuneate or rounded. Fruits not densely shaggy ...................................................................................................................................................................3 3 Lamina membranous, wrinkling when dry. Lamina elliptic-oblong to elliptic-lanceolate, 3 or 4 times longer than wide, 16–22 × 4.5–6.5 cm. Fruits 2–3 lobed ................................................................................................................................... 8. D. tenuifolium Lamina thinly to thickly coriaceous, not wrinkling when dry. Lamina if narrowly lanceolate then up to 3 times longer than wide. Fruits entire.........................................................................................................................................................................................4 4 Inflorescence a sessile glomerulus or with peduncle to 3 mm long...................................................................................................5 Inflorescences paniculate, stalked, peduncle at least 5 mm long .......................................................................................................6 5 Leaves glabrous, lateral veins 4–7 pairs. Fruits longer than broad or globose, 10–20 × 10–15 mm, tuberculate, glabrescent ........... ............................................................................................................................................... 1. D. gelonioides subsp. tuberculatum Leaves roughly hairy beneath, lateral veins 7–10 pairs. Fruits broader than long, or globose, 15–35 × 25–35 mm, smooth, velvety ................................................................................................................................................................... 5. D. longipetalum 6 Inflorescence a long, much branched panicle 25–90 mm long ...................................................................................9. D. timorense Inflorescence a few-flowered panicle 17–25 mm long ......................................................................................................................7 7 Leaves subcoriaceous, veins raised on the lower surface............................................................................................ 7. D. sordidum Leaves coriaceous, veins not raised on the lower surface ..................................................................................................................8 8 Young twigs and petiole hairy. Lamina usually oblong, apex sharply acuminate.................................................. 3. D. helferianum Young twigs and petiole glabrous. Lamina usually broadly oval, apex bluntly acuminate .................................. 4. D. laurocerasus