Verbena bracteata Lag. & Rodr.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Hirsute annual or perennial, usually with several diffusely branched, prostrate to ascending stems 1–5 dm; lvs 1–6.5 cm, pinnately incised or usually 3- lobed, narrowed to the short margined petiole, the lateral lobes smaller than the large, cuneate-obovate, incisely toothed central one; spikes terminal, sessile, commonly 10–15 mm thick, hispid-hirsute; bracts 8–15 mm, much longer than the cal, the lower often lf-like, the upper lance-linear and entire; cal 3–4 mm, its short lobes connivent over the fr; cor bluish to purple, the tube slightly exserted, the limb 2–3 mm wide; nutlets linear, 2–2.5 mm; 2n=14, 28. Prairies, fields, roadsides, and waste places; Me. to B.C., s. to Fla. and Mex., probably not native in the ne. part of the range. Apr.–Oct. (V. bracteosa) A hybrid with V. stricta is V. ×deamii Moldenke; one with V. urticifolia is V. ×perriana Moldenke.