Fig. 137. Cross-section of Flaxseed.

a. Epithelium. b. Epidermal cells in swollen condition. c. Stone cells. d. Layer of collapsed cells for building stone cells. e. Pigment coat. f. Containing oil.

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