1	Cauline leaves 2, opposite, usually with late branches in axils.		255 C. enantiophylla
+	Cauline leaves alternate or solitary or lacking; stems simple, rarely with a single branch		(2)
2 (1)	Bulb poorly developed, 1-3 mm, hardly discernable in herbarium specimens		(3)
+	Bulb prominent, 4-15 mm		(5)
3 (2)	Spur downcurved; stem with 2 leaves.		258 C. cheirifolia
+	Spur straight; stem with 1 leaf		(4)
4 (3)	Cauline leaf shortly stalked, trifoliolate.		256 C. trifoliata
+	Cauline leaf sessile with several narrow lobes.		257 C. oxypetala
5 (2)	Upper petal 9-12 mm; stem 4-7 cm, usually leafless		(6)
+	Upper petal 12-21 mm; stem 6-30 cm, with (0 or)1 or 2 leaves		(7)
6 (5)	Pedicels 5-15 mm, flowers not concealed by bracts.		263 C. jigmei
+	Pedicels 3-5 mm, flowers partly concealed by bracts.		264 C. oxalidifolia
7 (5)	Leaflets obovate; radical leaves prominent (cauline leaf often absent)		(8)
+	Leaflets linear to narrowly lanceolate or oblanceolate; radical leaves subordinate (cauline leaf rarely absent)		(9)
8 (7)	Leaves glossy green adaxially, glaucous abaxially; sepals minute; crest of upper petal ca. 1 mm wide.		266 C. pseudoadoxa
+	Leaves very glaucous on both surfaces; sepals 1-1.5 mm, laciniate-dentate; crest of upper petal ca. 0.5 mm wide.		267 C. glaucissima
9 (7)	Raceme 8-19-flowered; crest of upper petal 1-1.5 mm.		265 C. oreocoma
+	Raceme 2-8-flowered; crest of upper petal usually narrow or absent		(10)
10 (9)	Cauline leaves 2; upper petal 10-11 mm.		260 C. filisecta
+	Cauline leaf solitary; upper petal 13-21 mm		(11)
11 (10)	Lower petal very broad, apically truncate; leaflets of cauline leaf 0.5-1 mm wide.		262 C. ecristata
+	Lower petal acute to subacute; leaflets of cauline leaf 1-3 mm wide		(12)
12 (11)	Upper petal 14-15 mm, without crest; spur 7-8 mm; cauline leaf divided into 5 linear lobes; pedicels 8-12 mm.		259 C. longibracteata
+	Upper petal 16-21 mm, with or without crest; spur 9-12 mm; cauline leaf often more divided; pedicels 10-30 mm.		261 C. cashmeriana