Fig. 346, 347, 348. Microscopic structure of the bark of C. pubescens.

Fig. 346. Transverse section of the bark of C. pubescens.
Fig. 347. Transverse section of the liber of C. pubescens (more highly magnified than in Fig. 346).
Fig. 348. Longitudinal section of the liber of C. pubescens.
s, Suberous coat. ec, Cellular envelop. l, liber. cc, Cellular tissue of the liber. fl, Ligneous or cortical fibres of the liber. rm, Medullary rays.

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