1	Rhizome short, stout, erect or obliquely ascending		(2)
+	Rhizome procumbent, slender and long, yellow-brown to whitish, internodes longer, with scattered branched rootlets and nodes		(7)
2 (1)	Cauline leaves lanceolate and verticillate.		79 V. dimorphophylla
+	Cauline leaves reniform, ovate or triangular, alternate		(3)
3 (2)	Leaf blade pedatipartite.		80 V. muliensis
+	Leaf blade not divided		(4)
4 (3)	Leaf blades reniform or broadly ovate; rhizome very stout, longer, densely noded		(5)
+	Leaf blades triangular or ovate; rhizome stouter and shorter		(6)
5 (4)	Cauline leaves scattered throughout stem; pedicel 3-4 cm.		81 V. szetschwanensis
+	Cauline leaves usually clustered at top of stem; pedicel 2-3.5 cm.		82 V. confertifolia
6 (4)	Leaf blade thickly papery, abaxially glaucous; stipules small, margin entire or remotely dentate.		83 V. delavayi
+	Leaf blade thinly herbaceous, abaxially green; stipules large, margin dentate or shallowly lobed.		84 V. urophylla
7 (1)	Leaf blade broadly ovate, triangular-ovate, or ovate-lanceolate		(8)
+	Leaf blade reniform or subcordate		(9)
8 (7)	Leaf blade broadly ovate or triangular.		85 V. cameleo
+	Leaf blade ovate-lanceolate or ovate.		86 V. hediniana
9 (7)	Spur short, 1-2.5 mm.		87 V. biflora
+	Spur longer, 4-6 mm		(10)
10 (9)	Stem filiform; leaf blade basally deeply cordate.		88 V. tenuissima
+	Stem slender; leaf blade basally shallowly cordate.		89 V. wallichiana