1 | Inflorescences unbranched; flowers densely crowded in spaced, sessile clusters. |
1' | Inflorescences thyrsoid. |
2 | Lamina lanceolate to ovate-lanceolate, usually glabrous below |
2' | Lamina broader, mostly broadly ovate, pubescent below. |
3 | Young stems bearing short hairs interspersed or not with long, straight spreading hairs; sepals of male flowers only shortly connate. |
3' | Young stems bearing only long, straight, spreading hairs; sepals of male flowers united for at least half their length. |
4 | Lamina not peltate |
4' | Lamina peltate. |
5 | Petiole inserted 1-5 mm from basal margin of lamina. |
5' | Petiole inserted more than 6 mm from basal margin of lamina. |
6 | Lower surface of leaves tomentose; upper surface with a very dense, raised reticulation |
6' | Lower surface sparsely hairy; upper surface with a very lax, scarcely raised reticulation |
7 | Lamina 15-21 cm long. Male inflorescence with rhachis and branches stiff and straight, the flowers in congested peduncled cymes. Endocarp bearing 2 rows of c. 8 transverse ridges. |
7' | Lamina 7.5-12.5 cm long. Male inflorescence very slender and flexuose, the flowers in lax cymose clusters without obvious peduncles. Endocarp bearing 4 rows of c. 14 papilliform tubercles |
8 | Flowers male. |
8' | Flowers female. |
9 | Calyx glabrous or subglabrous; petals free |
9' | Calyx puberulous. |
10 | Petals free |
10' | Petals connate |
11 | Flowers clearly spaced in lax clusters. |
11' | Flowers tightly crowded in subglobose heads; carpels tomentose |
12 | Young carpels glabrous or subglabrous |
12' | Young carpels puberulous |