. Studies in fossil botany . Paleobotany. BENNETTITEAE 563 by Count Solms-Laubach in an Italian species, and by Dr. Wieland in the American material) agree precisely with the corresponding structures in a recent Cycad. â It is only when we come to the course of the bundles passing out to the leaves, that important differences. Fig. 201.âBennettitesSaxbyamts.âTransverse section of stem, fi, pith ; x, wood,///., phloem, together constituting a ring of collateral bundles ; , leaf-trace bundles, pass- ing out through the cortex, and subdividing repeatedly ; /./<., bases of leaves, which clo
. Studies in fossil botany . Paleobotany. BENNETTITEAE 563 by Count Solms-Laubach in an Italian species, and by Dr. Wieland in the American material) agree precisely with the corresponding structures in a recent Cycad. â It is only when we come to the course of the bundles passing out to the leaves, that important differences. Fig. 201.âBennettitesSaxbyamts.âTransverse section of stem, fi, pith ; x, wood,///., phloem, together constituting a ring of collateral bundles ; , leaf-trace bundles, pass- ing out through the cortex, and subdividing repeatedly ; /./<., bases of leaves, which clothe the stem. Reduced. From the Linnean Soc. Trans. After Carruthers. show themselves. In recent Cycads, as is well known to the botanical student, the course of the leaf-traces is peculiar and characteristic. To supply each leaf, two bundles leave the stele ; they start near together, and, curving in opposite directions, pass nearly half way round the stem, thus entering the leaf-base on the opposite side from their starting-points. They then 37. 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
Size: 1754px × 1425px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublisherlondonaandcblack
