1	Basal leaves 3-foliolate.		(2)
+	Basal leaves 5-foliolate.		(4)
2 (1)	Low growing herbs, basal stipules with lanceolate-acuminate auricles, petals 5.0-5.5 mm long, styles thin and sharp at the base.		40 Potentilla sino-nivea
+	Medium tall herbs, basal stipules with oblong to oblong-ovate auricles, petals 7-8 mm long, styles thickened at the base or uniformly thickened.		(3)
3 (2)	Plants covered with dense pale-yellow glands, stem and petioles tomentose with long spreading hairs, upper surface of leaflets adpressed pilose and green, lower dull white tomentose, styles thickened at the base.		41 Potentilla evestita
+	Plants eglandulose, stem and petioles floccose, upper surface of leaflets sericeous and greyish, lower griseo-tomentose, styles equally thickened.		42 Potentilla grisea
4 (1)	Petioles 1.0-2.5 cm long, terminal leaflets 0.7-2.0 cm long, upper surface of leaflets adpressed pilose, flowers 0.8-1.0 cm diam.		43 Potentilla saundersiana
+	Petioles 5-10 cm long, terminal leaflets 2.0-3.5 cm long, upper surface of leaflets sparsely tomentose, flowers 1.4-2.0 cm diam.		44 Potentilla blanda