. Studies in fossil botany . Paleobotany. POROXYLEAE 5°3. Fig. 181.—A, Poroxylon Edujardsii. Transverse section of stem, c, cavity in pith ; x, primary wood of bundles, which are numbered in the order of the fs phyllotaxis, No. i belonging to the lowest leaf of the series ; the angle i, c, 2, is that of the divergence between two succes;>ive leaves; it and ir, the two bundles constituting the outgoing leaf-trace ; x^, secondary wood ; />k, phloem. x about 5. After Bertrand and Renault. B, P. Boysseiii. Transverse section of young stem. / pith ; xy primary wood of bundles ; x'1, secondary


. Studies in fossil botany . Paleobotany. POROXYLEAE 5°3. Fig. 181.—A, Poroxylon Edujardsii. Transverse section of stem, c, cavity in pith ; x, primary wood of bundles, which are numbered in the order of the fs phyllotaxis, No. i belonging to the lowest leaf of the series ; the angle i, c, 2, is that of the divergence between two succes;>ive leaves; it and ir, the two bundles constituting the outgoing leaf-trace ; x^, secondary wood ; />k, phloem. x about 5. After Bertrand and Renault. B, P. Boysseiii. Transverse section of young stem. / pith ; xy primary wood of bundles ; x'1, secondary wood ; fth, phloem ; gc% secretory (?) sacs or canals; g, mucilage-canal; c, cortex; h, hypoderma. x 7. After Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Scott, Dukinfield Henry, 1854-1934. London, A. and C. Black


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