Key based on female plants

1	Ovary pilose.		(2)
+	Ovary glabrous.		(4)
2 (1)	Ovary ovoid; leaf margin sharply serrate		54 Salix okamotoana
+	Ovary narrowly ovoid or ovoid-conical; leaf margin entire, at least in proximal 1/2 of leaf.		(3)
3 (2)	Shrubs low, 20-30 cm tall; peduncle 4-8 mm; leaf blade elliptic, oblong-elliptic, or obovate, margin serrate in distal 1/2 of leaf		53 Salix taiwanalpina
+	Shrubs large, more than 1 m tall; peduncle to 15 mm; leaf blade oblong-lanceolate, margin entire		50 Salix doii
4 (1)	Plants creeping; leaf blade ca. 1 cm, margin serrulate, lateral veins 4 on each side of midvein		52 Salix takasagoalpina
+	Plants erect, rarely decumbent; leaf blade more than 1.5 cm, margin entire, rarely with inconspicuous, glandular teeth.		(5)
5 (4)	Catkin to 2 cm; low shrubs ca. 20 cm tall, growing in alpine zone on high mountains		51 Salix morrisonicola
+	Catkin more than 2.5 cm; shrubs or small trees more than 1 m tall, not growing on high mountains.		(6)
6 (5)	Young leaves brown pubescent abaxially; stipe ca. as long as bracts		48 Salix fulvopubescens
+	Young leaves white pubescent abaxially; stipe shorter than bracts		49 Salix tagawana