| 1 | Fruit a syncarp, ripe carpels shedding their apical parts. |
| 1' | Fruit apocarpous, ripe carpels longitudinally dehiscing. |
| 2 | Young twigs and stipules glabrous or yellowish villous, soon glabrescent, rarely pubescent. Nerves in (10—)14—21 pairs |
| 2' | Twigs densely fulvously pubescent or tomentose, later glabrescent. Nerves in 20-24 pairs |
| 3 | Twigs and leaves glabrous. Brachyblast glabrous |
| 3' | Twigs and leaves glabrous or hairy. Brachyblast hairy (except rarely in New Guinea: E. tsiampacca var. glaberrima) |
