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Fig. 6.—Section showing central part

Taxonomy extra:

Fig. 6.—Section showing central part of an older root in which the secondary changes have made further progress. Magnification, 110 diameters.
a, parenchyma cell of cortex;
b, cell of endodermis;
c, phloem;
d, meristem now traceable as a cambium zone;
e, outer extremity of xylem ray;
f, starch-bearing cells formed beneath pericambium;
g, cambium opposite outer end of xylem ray;
h, new ducts in process of formation, the beginning of the secondary xylem.

This image is from Structure of Cimicifuga in the American Journal of Pharmacy, 1895.

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