. Fossil plants : for students of botany and geology . Paleobotany. Fig. 143. A. Stomata in surface-view (Lepidodendronl). a, parenchyma; t, transfusion tracheae; x, xylem. (Manchester University Collection E. 723). B, C. Lepidodendron esnostense Ren. (After Renault.) ducting strand (figs. 142, t; 143, B, C, t). As Kenault shows in the case of Lepidodendron esnostense^, the small leaves of which are 1-5—2 mm. broad at the base and several centimetres long, the stomatal grooves and keel die out towards the apex when the lamina assumes a more nearly circular form (fig. 143, C). The area of the c
. Fossil plants : for students of botany and geology . Paleobotany. Fig. 143. A. Stomata in surface-view (Lepidodendronl). a, parenchyma; t, transfusion tracheae; x, xylem. (Manchester University Collection E. 723). B, C. Lepidodendron esnostense Ren. (After Renault.) ducting strand (figs. 142, t; 143, B, C, t). As Kenault shows in the case of Lepidodendron esnostense^, the small leaves of which are 1-5—2 mm. broad at the base and several centimetres long, the stomatal grooves and keel die out towards the apex when the lamina assumes a more nearly circular form (fig. 143, C). The area of the cushion excluding the leaf-scar is spoken of by some writers as the field. Below the leaf-scar the kite- shaped cushion tapers to a gradually narrowing basal position: in Lepidodendron Veltheimianum, a species characteristic of 1 Renault (96) A. Pis. xxxiii. xxxiv. p. 178. For a good section of another Lepidodendron leaf, see Scott (08) p. 160, figs. 64, 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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