. Fossil plants : for students of botany and geology . Paleobotany. 150 MEDULLOSEAE [ Fig. 439. Sutcliffia insignia Scott. A, B, E, forma u,. (After Scott.) C, D» forma §. (After de Fraine.) A. Transverse section of stem; a,, b, double rows of leaf-trace bundles. The larger black masses are the meristeles; the smaller patches represent bundles derived from the meristeles. B. Longitudinal section of a radially symmetrical bundle from a leaf-base. C. The junction between the primary and secondary xylem. D. Vascular system in transverse section: m, m', meristeles; a, main stele; e, extra-faso
. Fossil plants : for students of botany and geology . Paleobotany. 150 MEDULLOSEAE [ Fig. 439. Sutcliffia insignia Scott. A, B, E, forma u,. (After Scott.) C, D» forma §. (After de Fraine.) A. Transverse section of stem; a,, b, double rows of leaf-trace bundles. The larger black masses are the meristeles; the smaller patches represent bundles derived from the meristeles. B. Longitudinal section of a radially symmetrical bundle from a leaf-base. C. The junction between the primary and secondary xylem. D. Vascular system in transverse section: m, m', meristeles; a, main stele; e, extra-fasoicular strands; It, leaf-traces; c, secondary cortex. E. Vascular bundle from petiole showing a ring of large sieve-tubes surrounding the xylem, and portions of stereome 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
Size: 1405px × 1778px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublishercambr, bookyear1898
