1 | Leaves +/- densely stellate-tomentose; flowers large; petals 10-18 mm long |
1' | Leaves subglabrous or sparsely stellate-pubescent; flowers small |
2 | Leaves 2-8 cm long, softly tomentose with long hairs, indumentum more than 0.3 mm, often up to 0.5 mm thick; petals white or pale pink or pink-tinged |
2' | Leaves 0.8-2(-4) cm long, densely tomentose with short hairs, indumentum less than 0.2 mm thick; petals pink, lilac or purplish, rarely white |
3 | Petals purple or violet, 7-9 mm long; stem unbranched or branched only at the base |
3' | Petals white, about 3.5 mm long; stem usually much-branched, especially towards base |