1. Cross-section of root. p. Rind-parenchyma, with starch and crystal cells. c. Cambium, with a cuneated sieve-tube. g. Xylem portion (duct).
2. Radial, longitudinal section of root. p. Rind-parenchyma. s. Sieve-tube showing plates.
3. Tangential section, showing wood parenchyma and ducts.

This image is from Belladonna in King's American Dispensatory, 1898.