General outline of the leaf
Described from mature leaves located in the middle section of the vine.

| Code | Term | Description |
|---|---|---|
| 1 | Rounded | |
| 2 | Reniform | Kidney-shaped |
| 3 | Cordate | Heart-shaped |
| 4 | Triangular | |
| 5 | Hastate | Trilobular and spear-shaped, with the basal lobes more or less divergent |
| 6 | Lobed | |
| 7 | Almost divided |