Prunus. Fig. 9.—Sclerenchyma fibres from Prunus Avium as they appeared in situ in a longitudinal section.

Fig. 9.—Some of the sclerenchyma fibres as they appeared in situ in a longitudinal tangential section of the bark of Prunus Avium. Magnification, about 230 diameters. The more regular, slender and elongated fibres usually occur in masses.

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