| 1. Styles generally 24; leaf upper surface in fruit generally puberulent to sparsely and finely tomentose (glabrous in n Desert Mountains) |
| A. utahensis |
| 1' Styles generally 5; leaf upper surface in fruit generally glabrous |
| A. alnifolia |
| 2. Ovary top glabrous; petals 612 mm; leaf lower surface glabrous; fruit 710 mm diam |
| var. pumila |
| 2' Ovary top tomentose; petals 1115 mm; leaf lower surface sometimes sparsely hairy; fruit 1014 mm diam |
| var. semiintegrifolia
|