| 1 | Leaves thin-membranaceous, usually over 3 cm long; margin crenate or entire. |
| 1' | Leaves chartaceous to thin-coriaceous, much shorter; if long then the margin often with 2-3 coarse teeth on each side. |
| 2 | Rachis of inflorescence not or thinly glandular-hairy. Leaves 3-4 by 1.5-2 cm |
| 2' | Rachis of inflorescence often densely glandular-hairy. Leaves 7.5-10 by 3-3.5 cm |
| 3 | Leaves 0.5-1.5 cm long; margin often remotely crenate or subentire. |
| 3' | Leaves 2-3.5(-6.5) cm long; margin often with 2-3 coarse teeth on each side |
