1	"Stems and leaves glabrous; flowers white to mauve"	2
1	"Stems and leaves sparsely to densely hairy; flowers purple or blue"	3
2	"Erect plant; leaves elliptical, 15-40 mm long; pedicels 2.5-4 mm long; largest sepal 3.8-5.5 mm wide"	"Bacopa floribunda"
2	"Prostrate plant; leaves obovate, 7-17 mm long; pedicels 10-23 mm long; largest sepal 3.0-4.0 mm wide"	"Bacopa monnieri"
3	"Leaves broadly ovate to orbicular; stem hairs patent, 1.5-2 mm long; pedicels 8-18 mm long"	"Bacopa lanigera"
3	"Leaves ovate, c. 1-5-2 times longer than broad; stem hairs crisped, up to 0.7 mm long; pedicels 2-6 mm long"	"Bacopa caroliniana"