| | 1. Petals curving over fruit as fruit matures (sect. Inflexae) |
| |
| | 2. Petals < to ± > sepals |
| L. floccosa |
| | 3. Flower cup-shaped; fruit papillate, generally with wide-conic tubercles |
| subsp. californica |
| | 3' Flower bell- to urn-shaped; fruit with awl-shaped tubercles, also generally with bristles |
| subsp. floccosa |
| |
| |
| | 5. Petals aging pink; anthers ± 1 mm; Peninsular Ranges |
| L. gracilis subsp. parishii |
| | 5' Petals aging white; anthers 0.5–1 mm; c&s Sierra Nevada Foothills |
| L. montana |
| L. alba |
| | 6. Sepals densely hairy; fruit widely ridged; s North Coast Ranges, n&c Sierra Nevada Foothills, Great Central Valley |
| subsp. alba |
| | 6' Sepals glabrous or sparsely hairy; fruit smooth or sharply tubercled; Cascade Range Foothills, n&c Sierra Nevada Foothills, n High Sierra Nevada |
| subsp. versicolor |
| | 1' Petals reflexing as fruit matures (except rarely) (sect. Reflexae) |
| |
| | 7. Stamens 2–4 mm; petals 7–15 mm |
| |
| | 8. Leaflets generally entire (lower rarely 2–3-lobed); petals 7–9 mm; c Outer North Coast Ranges (near Willits, Mendocino Co.) |
| L. bakeri |
| | 8' Leaflets entire to 2–3-lobed; petals 8–15 mm; Klamath Ranges, n&c Sierra Nevada Foothills |
| L. striata |
| | 7' Stamens 5–8 mm; petals 10–18 mm |
| |
| L. vinculans |
| | 9' Leaflets 5–13, entire or often toothed or lobed |
| L. douglasii |
| | 10. Petals yellow or yellow with white tips |
| |
| | 11. Petals yellow with white tips |
| subsp. douglasii |
| subsp. sulphurea |
| | 10' Petals mostly white, not at all yellow (except rarely when dry) |
| |
| | 12. Petals white, veins white or purplish; nutlets ± tubercled above or smooth; North Coast Ranges, San Francisco Bay Area, South Coast Ranges |
| subsp. nivea |
| | 12' Petals white, veins rose; nutlets ridged; Inner North Coast Ranges, Cascade Range Foothills, c Sierra Nevada Foothills, Great Central Valley |
| subsp. rosea
|