Fig. 078. Powdered Aconite Tuber.

(100 diam.) A, Stone cells. B, Fragments of water tubes. C, Parenchyma, cross-section.D, Parenchyma, longitudinal section. E, Starch.

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