Fig. 275. Magnified view of a section of non-mealy (Jamaica) sarsaparilla.

a. Cuticle or epidermis.
b. Outer cortical layers.
c. Red inner cortical layers.
d. Cellular sheath.
e. Woody zone.
f. Medulla or pith.

This image is from Sarsaparilla in Pereira's Elements of Materia Medica and Therapeutics, 1854.