| | 1. Middle and upper cauline leaves sessile, clasping stem; leaves entire to few-toothed; petal hairs 0 |
| S. viridiflora |
| | 1' Middle and upper cauline leaves petioled; leaves entire to deeply pinnately lobed; petal hairs 0 or on inner side of claws, dense |
| |
| | 2. Lower cauline leaves entire to sharp-toothed; petal hairs 0, blades yellow to whitish |
| S. elata |
| | 2' Lower cauline leaves deeply pinnately lobed; petal hairs on inner side of claws, dense, blades yellow |
| S. pinnata |
| | 3. Shrub; trunk short, 4–8 cm wide; leaves yellow-green |
| var. inyoensis |
| | 3' Perennial to subshrub; trunk 0, stems several–many from base; leaves gray-green, generally glaucous |
| var. pinnata
|