502. Collinsonia.—Stone Root.

Botanical name: 
Collinsonia canadensis

502. COLLINSONIA.—STONE ROOT. The rhizome of Collinso'nia canaden'sis Linné. Long, with short, knotty branches and numerous stem-scars; hard; internal whitish; nearly inodorous; taste bitter and nauseous. Contains resinous matter. Diaphoretic, diuretic, and irritant.

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