. Studies in fossil botany . Paleobotany. Fig. 54.—Lepidodendron Veltheimianum. Portion of surface of stem, showing the leaf-bases (/.^.), with the leaf-scar () at the upper end of each. 3 nat- s'ze- stem-surface exposed between them. The whole cushion is rhombic in outline, and somewhat prominent, having a flatly pyramidal form. The apex of the pyramid is truncated, forming a flat sur- face, which represents the scar left by the fall of the leaf (see Fig- 5 5) s-c)- Thus the actual scar only occupies a small part Fig. 55--Lepidodendron. Leaf-base. 0f the whole rhombic area, sc, leaf-s
. Studies in fossil botany . Paleobotany. Fig. 54.—Lepidodendron Veltheimianum. Portion of surface of stem, showing the leaf-bases (/.^.), with the leaf-scar () at the upper end of each. 3 nat- s'ze- stem-surface exposed between them. The whole cushion is rhombic in outline, and somewhat prominent, having a flatly pyramidal form. The apex of the pyramid is truncated, forming a flat sur- face, which represents the scar left by the fall of the leaf (see Fig- 5 5) s-c)- Thus the actual scar only occupies a small part Fig. 55--Lepidodendron. Leaf-base. 0f the whole rhombic area, sc, leaf-scar; 7/.&, print of bundle; p, double parichnos; a, mOSt of which IS formed by superficial prints on either side of , . 1 /- 1 • t*i cushion;/, liguie. Figs. 54 and the persistent leaf-cushion. The S5afterStur- whole is not symmetrical, for the leaf-scar always lies near the upper end of the cushion. On the flat surface of the scar itself, three. 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
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