. Fossil plants : for students of botany and geology . Paleobotany. Fig. 55. 1. Transveise section of a root of Equisetum variegatum Sohl., e endo- dermie, or outer layer of the phloeoterma (after Pfitzer; xl60). 2. Trans- verse section of rhizome of E. maximum, slightly enlarged. 3. Transverse section through a node of E. maximum, x, branch of vascular strand (slightly enlarged). 4. Transverse section through a node of E. maximum showing the mass of xylem, px protoxylem ( x 175). (Figs. 3 and i after Cormack.) Immediately external to each vascular strand, as seen in transverse section, there
. Fossil plants : for students of botany and geology . Paleobotany. Fig. 55. 1. Transveise section of a root of Equisetum variegatum Sohl., e endo- dermie, or outer layer of the phloeoterma (after Pfitzer; xl60). 2. Trans- verse section of rhizome of E. maximum, slightly enlarged. 3. Transverse section through a node of E. maximum, x, branch of vascular strand (slightly enlarged). 4. Transverse section through a node of E. maximum showing the mass of xylem, px protoxylem ( x 175). (Figs. 3 and i after Cormack.) Immediately external to each vascular strand, as seen in transverse section, there is a layer of cells containing 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 Seward, A. C. (Albert Charles), 1863-1941. Cambridge : University Press
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishercambr, bookyear1898
