2. Gnetaceae.

Botanical name: 
Ephedra antisyphilitica

36. EPHEDRA.—The herb Ephe'dra antisyphilit'ica C. A. Meyer. This plant is a native of Arizona, where it is used in venereal diseases. Dose of fl'ext.: 1 to 2 fl. dr. (4 to 8 mils).

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