Fig. 268-269. Magnified Views of the Cells composing the Nucleus Sheath
(according to Schleiden).
Fig. 268. Central American Sarsaparilla (Honduras).
Fig. 269. South American Sarsaparilla (Vera Cruz).
a. The cells of the sheath.
b. A portion of the woody zone.
This image is from Sarsaparilla in Pereira's Elements of Materia Medica and Therapeutics, 1854.