Verbena simplex Lehmann. Narrowleaf Vervain. Phen: May-Sep. Hab: Glades, prairies, woodlands, forests, rock outcrops, and roadsides, over limestone or mafic rocks. Dist: NH west to MN and NE, south to Panhandle FL (Jackson County) and TX.
Origin/Endemic status: Native
Syn: = Ar, C, F, Fl6, G, GrPl, Il, K1, K3, K4, Mi, NE, NY, Pa, RAB, Tn, Va, W, WH3, Barber (1982), Nesom (2010b); = Verbena angustifolia Michx. – S, illegitimate name