| 1 | Leaf apex rounded; primary veins 6-8 pairs. Fiji |
| 1' | Leaf apex acuminate or acute; primary veins usually more than 10 pairs. India, Malesia, or Pacific: Fiji, only A. racemosa. |
| 2 | Receptacle tube cylindrical and narrow. |
| 2' | Receptacle tube funnel-shaped to campanulate. |
| 3 | Leaves broadly elliptic, 8-10 cm broad; rounded at base; apex shortly acuminate, the acumen 2-3 mm long |
| 3' | Leaves oblong, 2.5-6 cm broad; subcuneate to rounded at base; apex with long thin acumen 4-22 mm long. |
| 4 | Receptacle 8-13 mm long. Leaf apex long acuminate; base rounded |
| 4' | Receptacle 5-7 mm long. Leaf apex short acuminate, the acumen 3-10 mm long; base cuneate |
| 5 | Leaves broadly ovate, thickly coriaceous, cordate at base, 4.5-12 cm long |
| 5' | Leaves usually elliptic, chartaceous to thinly coriaceous, usually rounded at base (if cordate then exceeding 10 cm in length). |
| 6 | Fertile stamens 12-14. Inflorescence sericeous or sparsely pilose. India. |
| 6' | Fertile stamens 15-20. Inflorescence tomentellous. Not in India |
| 7 | Inflorescence sparsely pilose. Leaves elliptic-lanceolate, with 8-10 pairs of primary veins. India |
| 7' | Inflorescence densely sericeous. Leaves lanceolate, with 12-16 pairs of primary veins. India |
