Fig. 073. Hydrastis - Rhizome, cross-section.

(18 diam.) A, Cortex. B, Vascular bundle. C, Medulla. (Photomicrograph).

This image is from Hydrastis in Sayre's Manual of Organic Materia Medica and Pharmacognosy, 1917.

Fig. 73. Hydrastis - Rhizome, cross-section.