Distanskurs i örtterapi.

Prunus. Fig. 12.—From longitudinal tangential section of inner bark of Prunus Pennsylvanica.

Fig. 12.—From longitudinal tangential section of i...

Fig. 12.—Portion of longitudinal tangential section of inner bark of P. Pennsylvanica magnified about 75 diameters.
a, medullary ray;
b, soft bast cell;
c, bast fibre;
d, crystal cell.

This image is from Structure of our Cherry Barks in the September issue of the American Journal of Pharmacy, 1895.