| 1. Leaf widest below middle, 1525 mm wide, teeth 1121 |
| P. lanceolata |
| 1' Leaf generally widest at or above middle, 510 mm wide, teeth 511 |
| P. nodiflora |
| 2. Leaf generally 45 × longer than wide, narrowly wedge-shaped |
| var. incisa |
| 2' Leaf generally 24 × longer than wide, oblanceolate to elliptic |
| var. nodiflora
|