4 (1) | Stigma distinctly four-lobed; stems covered with long spreading hairs. | (5) | |
+ | Stigma entire, clavate to capitate; stems subglabrous or covered with short incurved or gland-tipped hairs. | (6) | |
5 (4) | Leaves distinctly clasping, petals 6-20 mm long, purplish. | 3 Epilobium hirsutum | |
+ | Leaves subsessile but not clasping; petals 3.2-9 mm long, pink. | 4 Epilobium parviflorum |