1	"Calyx tube 20-25 mm long, mostly orangy-red, but black near apex; leaves glabrous except for tiny hairs along margin; petals absent"	"Cuphea ignea"
1	"Calyx tube 4.5-5.5 mm long, pale yellow; leaves with appressed strigose hairs especially along mid-vein on lower surface; petals conspicuous, pink, 2-3.5 mm long"	2
2	"Branchlets and calyx tubes with numerous glandular hairs; leaves broadly elliptic, 2-3 times longer than broad; seeds 1.6-1.75 mm long, pale yellow with brown spots"	"Cuphea carthagenensis"
2	"Branchlets and calyx tubes with non-glandular hairs only; leaves narrowly elliptic, 3.5-6 times longer than broad; seeds c. 1.2 mm long, uniformly brown"	"Cuphea hyssopifolia"