470. Verbena hastata.—American Blue Vervain. 471. Verbena urticaefolia.—White vervain.

470. VERBENA HASTATA Linné.—AMERICAN BLUE VERVAIN. (Root and Herb.) (Verbena, N.F., is the dried overground portion of the plant, collected when flowering.) The hot infusion is used as a sudorific in colds, etc. Also tonic and expectorant. Dose of fl'ext.: 30 to 60 drops (2 to 4 mils).

471. VERBENA URTICAEFOLIA Linné.—WHITE VERVAIN. Habitat: Tropical America. (Root.) Febrifuge. Credited with the cure of the opium-habit. Dose of fl'ext.: 30 to 40 drops (2 to 2.6 mils).

A Manual of Organic Materia Medica and Pharmacognosy, 1917, was written by Lucius E. Sayre, B.S. Ph. M.