| 1 | Filament of fertile stamens short, c. 3 mm, hairy as the staminodes |
| 1' | Filament of fertile stamens longer, 6-13 mm, glabrous as the staminodes.. |
| 2 | Pedicels short, 1-1.5 cm; hypanthium 2-2.7 cm long; bracts large, 8-10 by 4 mm |
| 2' | Not this combination |
| 3 | Hypanthium short, 4-8 mm; leaves rigidly coriaceous, small, 3.5 by 1.3 to 9 by 3 cm, glabrous |
| 3' | Hypanthium and leaves otherwise |
| 4 | Ovary silky, light brown, appressed hairy all over, hairs retained after anthesis; the leaves lanceolate, 11.5 by 2.5 to 20 by 5 cm |
| 4' | Ovary hairy along sutures only, occasionally hairy all over but after anthesis laterally glabrous |
| 5 | Leaves small, 4 by 2 to 8 by 3.5 cm, densely rusty hairy at nerves beneath, and on petioles and inflorescences |
| 5' | Not this combination |
| 6 | Petioles thick, densely hairy; lower surface of leaves of young shoots and inflorescences densely hairy |
| 6' | Not this combination |
| 7 | Leaves sub-5-nerved (= with 3 long nerves reaching apex, and 2 short, distinct, basal nerves) base ± cordate, rarely obtuse, persistently dark brown, densely hairy beneath; pedicels slender, patently hairy |
| 7' | Leaves 3-nerved to sub-5-nerved, base cuneate to obtuse, reddish brown beneath or mainly on the nerves; pedicels velvety hairy to puberulous. |
| 8 | Leaves rigidly coriaceous, large, 16 by 5 to 21 by 7.5 cm, glabrous, apex acuminate, base ± truncate |
| 8' | Leaves chartaceous to coriaceous, varying in form, size and hairiness, base cuneate to ± truncate |
