Fig. 225. Leptandra - Cross-section of rhizome.
(13 diam.) A, Cork. B, Parenchyma of cortex. C, Phloem. D, Medullary ray. E, Xylem. F, Medulla. (Photomicrograph.)
This image is from Leptandra in Sayre's Manual of Organic Materia Medica and Pharmacognosy, 1917.
