| | 1. Styles generally 2–4; 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 6–12 mm; leaf lower surface glabrous; fruit 7–10 mm diam |
| var. pumila |
| | 2' Ovary top tomentose; petals 11–15 mm; leaf lower surface sometimes sparsely hairy; fruit 10–14 mm diam |
| var. semiintegrifolia
|