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Fig. 331, 332, 333. Microscopic structure of the liber of C. calisaya, scrobiculata and pubescens.

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Pereira 1854
Cinchona

Longitudinal section of Cinchona calisaya.
Longitudinal section of C. scrobiculata.
Longitudinal section fo C. pubescens.
fl', Ligneous fibres. cc, cellular tissue of the liber. rm', Medullary rays.

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

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