. Fossil plants : for students of botany and geology . Paleobotany. XX] MARATTIALES 319 tracheae are added to the primary xylem by the activity of the adjacent parenchyma. The vascular bundles in the petiole form more or less regular concentric series ; they have no endodermis and are characterised also by the large size of the sieve-tubes (st, fig. 243). The roots of Marattiaceous ferns (fig. 244) are characterised by the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustration
. Fossil plants : for students of botany and geology . Paleobotany. XX] MARATTIALES 319 tracheae are added to the primary xylem by the activity of the adjacent parenchyma. The vascular bundles in the petiole form more or less regular concentric series ; they have no endodermis and are characterised also by the large size of the sieve-tubes (st, fig. 243). The roots of Marattiaceous ferns (fig. 244) are characterised by the. 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: 1679px × 1488px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublishercambr, bookyear1898
