| 1 | Fruits narrowly ovoid, truncate at base and pointed at apex, 2.9-3.7 by 1.4-1.8 cm. |
| 1' | Fruits globose to somewhat ellipsoid, 1-5 by 0.8-5.8 cm, if pointed at the apex then < 2 by 1.5 cm |
| 2 | Ovary glabrous; plants mostly above 1100 m |
| 2' | Ovary pubescent, pilose or tomentose, or rarely almost glabrous and then plants at low altitude (< 100 m) |
| 3 | Inflorescence usually axillary, small, lax, delicate; petals markedly shorter than calyx lobes; leaves often with minute ± spherical, sometimes reddish resinous glands on the lower surface, especially when young |
| 3' | Inflorescence usually terminal or false-terminal and well branched, ± robust; petals extending as far as the calyx lobes; leaves usually lacking glands |
| 4 | Ovary pubescent to pilose, rarely almost glabrous (TransFly region); leaves usually chartaceous to subcoriaceous, rarely coriaceous, usually acute at the apex. |
| 4' | Ovary tomentose; leaves usually coriaceous or subcoriaceous, usually rounded at the apex |
| 5 | Inflorescence axes densely and persistently tomentose; flowers sessile. |
| 5' | Inflorescence axes pubescent or sparsely to moderately tomentose, if the latter then the indumentum not persistent; flowers subsessile to pedicellate |
| 6 | Leaves glabrous and eglandular, or if hirsute then fruits large, 2.5-5 by 2.5-5.8 cm. |
| 6' | Leaves with reddish or brownish tomentum and/or glands, especially when young; fruits small, 1.6-2 by 1.6-2.2 cm |
| 7 | Inflorescence terminal; lateral vegetative branches almost as dominant as median axis of shoot; indumentum reddish |
| 7' | Inflorescence false-terminal; lateral vegetative branches not as dominant as median axis of shoot; indumentum fawn to brown, not reddish |
