1	"Ovary woolly, fruit +- woolly; outer perianth parts irregularly shallowly fringed"	"Veratrum insolitum"
1	"Ovary, fruit glabrous or with only a few straight hairs, not woolly; perianth parts entire to deeply fringed"	2
2	"Perianth deeply fringed"	"Veratrum fimbriatum"
2	"Perianth entire to finely dentate"	3
3	"Inflorescence dense, branches crowded, spreading to ascending"	"Veratrum californicum var. californicum"
3	"Inflorescence open, branches +- spaced, lower drooping"	"Veratrum viride"