Fig. 162. Stillingia - Cross-section of root.

Fig. 162. Stillingia - Cross-section of root.

(17 diam.) A, Cork. B, Parenchyma of cortex. C, Medullary ray. D, Xylem. (Photomicrograph.)

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