1 | Leaves 2-3-pinnate |
1' | Leaves imparipinnate, or unifoliolate. |
2 | Ovary 2-celled (or predominantly so). |
2' | Ovary variable, but many flowers with more than 2 cells. |
3 | Main inflorescence branches diffusely branched |
3' | Main inflorescence branches with verticils of short branches |
4 | Leaflets orbicular or reniform. Leaves unifoliolate or trifoliolate |
4' | Leaflets ovate, oblong, or elliptic (cultivated forms often laciniate or lanceolate). Leaves with 3 or more pairs of leaflets. |
5 | Leaf margin sharply serrate (blade often rhomboidal and variegated with light yellow) |
5' | Leaf margin entire, or obscurely dentate. |
6 | Peduncles of the ultimate umbellules bearing 1 or more pairs of small bracts (reduced flowering branches sometimes present in their axils) |
6' | Peduncles of the ultimate umbellules either without bracts, or with 1 or more small bracts inserted singly |