Fig. 202. Gelsemium - Cross-section of rhizome.
(25 diam.) A, Cork. B. Parenchyma of cortex. C, Bast fibers. D, Xylem. E, Medullary ray. F, Medulla. (Photomicrograph.)
This image is from Gelsemium in Sayre's Manual of Organic Materia Medica and Pharmacognosy, 1917.
