1 | Flowers in more or less pedunculate dichasia |
1' | Flowers in tightly congested, sessile dichasia |
2 | Leaflets with 1-2(4) teeth on margins just below the apex, the base rounded to subcordate; petiolules 1-2 mm long; petals 5 |
2' | Leaflets entire, the base asymmetrical, one side obtuse to subrounded, the other attenuate; petiolules (2)5-7 mm long; petals 4 |
3 | Floral disc glabrous or puberulent; petiolules 2-3 mm long |
3' | Floral disc tomentose; petiolules 6-15 mm long |
4 | Leaflets rigid-coriaceous, bullate |
4' | Leaflets coriaceous, flattened |