| 1 | Leaves broadly ovate, 10-30 mm broad; soft shrublet or herb up to 1.5 m | Endostemon obtusifolius |
| 1 | Leaves linear or lanceolate to oblanceolate, 1-10 mm broad; dwarf shrublet or herb 15-40 cm | 2 |
| 2 | Verticils 2-flowered; bracts small, 3-5 mm; calyx throat villous; lateral calyx teeth subulate | Endostemon tenuiflorus |
| 2 | Verticils 4-6-flowered; bracts leaf-like, 8-15 mm; calyx throat not villous; lateral calyx teeth oblong | Endostemon tereticaulis |