Leaflet shape
Measured on the terminal leaflet of the third trifoliate leaf, to obtain a ratio between the length (l) and the width (w). treat shallowly lobed leaflets as a separate category. See Figure 1, below
| Code | Term | Description |
|---|---|---|
| 1 | Ovate | L/w ratio 1:1.5 |
| 2 | Ovate-lanceolate | L/w 1.5:2 |
| 3 | Lanceolate | L/w 2:3 |
| 4 | Linear-lanceolate | 1/w 3:6 |
| 5 | Linear | L/w > 6 |
| 6 | Shallowly lobed | |
| 7 | Other | Specified in the descriptor notes 11 |