Fig. 201. Gelsemium

Fig. 201. Gelsemium

- Cross-section of root. (19 diam.). A, Cork. B, Phloem. C, Xylem. D, Medullary ray. (Photomicrograph).

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