1	"Flowers open during day"	2
1	"Flowers open in evening"	4
2	"Perianth white or +- pink; flowers, buds 2--several per node"	"Chlorogalum parviflorum"
2	"Perianth deep blue to purple; flowers, buds 1 per node"	3
3	"Inflorescence 25--40 cm"	"Chlorogalum purpureum var. purpureum"
3	"Inflorescence 10--20 cm"	"Chlorogalum purpureum var. reductum"
4	"Leaf 2--5 mm wide, margin +- flat"	"Chlorogalum angustifolium"
4	"Leaf 4--25 mm wide, margin generally wavy"	5
5	"Pedicels 2--5 mm, << perianth"	"Chlorogalum grandiflorum"
5	"Pedicels 5--35 mm, +- >= perianth"	6
6	"Bulb coat membranous or with few coarse fibers"	"Chlorogalum pomeridianum var. minus"
6	"Bulb coat not membranous, with many coarse fibers"	7
7	"Inflorescence < 40 cm, +- prostrate or branches spreading from base"	"Chlorogalum pomeridianum var. divaricatum"
7	"Inflorescence 50--250 cm, erect"	"Chlorogalum pomeridianum var. pomeridianum"