| | 1. Stem-bud hairs dense, whitish, evenly distributed; leaflets 9–17; alien |
| S. aucuparia |
| | 1' Stem-bud hairs (0) generally sparse, whitish or red-brown, generally ± marginal; leaflets 7–13; native |
| |
| | 2. Leaflet toothed generally only above middle; styles 2–3 mm |
| S. sitchensis var. grayi |
| | 2' Leaflet toothed from below middle (or near base); styles 1–2.5 mm |
| |
| | 3. Pedicel glabrous; leaflets 7–9(11), 2–4 cm; stem-buds 3–8(11) mm, hairs red-brown; petals 3–4 mm; plant 1–2 m |
| S. californica |
| | 3' Pedicel sparsely hairy; leaflets 9–13, 2–7 cm; stem-buds 7–15 mm, hairs whitish; petals 5–6 mm; plant 1–5 m |
| S. scopulina |
| | 4. Leaflets 9–11, generally oblong (ovate); stipules often ± persistent; especially w of Cascade Range summit |
| var. cascadensis |
| | 4' Leaflets (9)11–13, generally lanceolate; stipules generally not persistent in fruit; especially e of Cascade Range summit |
| var. scopulina
|