Fig. 293. Powdered Stramonium.

—(X 183.) A, Epidermis, surface view. B, Transverse section of leaf. C, Aggregate crystals of calcium oxalate. D, Non-glandular trichomes. E, Glandular tricomes. F, Pollen grains. G, Water tubes. H, Mesophyll cell, containing sphenoidal crystals of calcium oxalate. I, Palisade parenchyma, surface view.

This image is from Drug Powders (also see Stramonium) in Sayre's Manual of Organic Materia Medica and Pharmacognosy, 1917.