| 1. Leaf venation |
| 104Pinnate 7Tripliveined, main laterals arising above base of lamina 5Triveined, main laterals arising at base of lamina |
| 2. Leaf position |
| 77Alternate 26Clustered 22Opposite or nearly so 9Verticillate |
| 3. Leaf indument type |
| 18Appressed 44Erect 68Glabrous |
| 4. Twig indument density |
| 43Covered with indument 54Glabrous 31Partially visible |
| 5. Twig: bract and leaf scar arrangement |
| 49Clustered 67Scattered |
| 6. Inflorescence type |
| 21-flowered umbel with involucre 42Paniculate but not strictly cymose 24Paniculate cymose, lateral flowers of a cyme strictly opposite 3Racemose 43Umbels or pseudo-umbels with an involucre |