Verbena L.

Plants erect not rooting at nodes Verbena
Leaves shortly petiolate entire to deeply divided. Spikes dense at flowering but often elongating in fruit
Corolla limb 8–10 mm diam. Calyx 6–9 mm long. Upper and lower leaves c. 2–6 cm long, all deeply divided and subdivided. Prostrate and ascending annual up to 50 cm high. Coast. Weed of roadsides. Uncommon. Introd. from S. America. Fl. spring–summer Verbena aristigera
Corolla limb 2–5 mm diam.; the tube up to c. 4 mm long. Calyx c. 3 mm long