. Fossil plants : for students of botany and geology . Paleobotany. xv] 99 Sigillaria, but as the leaves of these two genera are constructed on the same plan the identification is of secondary importance. The single xylem bundle consists of primary tracheae only, at least in such laminae as have been identified as Lepidodendroid, Surrounding the xylem strand occur delicate parenchymatous cells in some cases accompanied by darker and thicker-walled elements. As in Sigillaria, the leaves of which are more fully described on page 210, a fairly broad sheath of wider and shorter scal
. Fossil plants : for students of botany and geology . Paleobotany. xv] 99 Sigillaria, but as the leaves of these two genera are constructed on the same plan the identification is of secondary importance. The single xylem bundle consists of primary tracheae only, at least in such laminae as have been identified as Lepidodendroid, Surrounding the xylem strand occur delicate parenchymatous cells in some cases accompanied by darker and thicker-walled elements. As in Sigillaria, the leaves of which are more fully described on page 210, a fairly broad sheath of wider and shorter scalariform or spiral transfusion tracheids surrounds the con- B. 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
