. Fossil plants : for students of botany and geology . Paleobotany. 16 CYCADALES [CH. to the upper sloping sides of the raohis which forms a prominent ridge between the rows of leaflets, and characteristic oval scars are left on the fall of the pinnae (fig. 387, D, G')- The lamina in most species contains several veins more or less parallel to the margins and often much more prominent on the lower than on the upper Via. 387. Cycadean fronds. A, Cycas circinalis; B, Macrozamia Fraseri; C, Macrozamia Denisoni; D, Encephalartos caffer; E, F, Dioon edule from below and above; G, Sncephal
. Fossil plants : for students of botany and geology . Paleobotany. 16 CYCADALES [CH. to the upper sloping sides of the raohis which forms a prominent ridge between the rows of leaflets, and characteristic oval scars are left on the fall of the pinnae (fig. 387, D, G')- The lamina in most species contains several veins more or less parallel to the margins and often much more prominent on the lower than on the upper Via. 387. Cycadean fronds. A, Cycas circinalis; B, Macrozamia Fraseri; C, Macrozamia Denisoni; D, Encephalartos caffer; E, F, Dioon edule from below and above; G, Sncephalartos Frederici-GuiUelmi, G', side-view; H, Ceratozamia mexicana; I, Cycas circinalis, lower part of young frond, Zamia. In Zamia angustifolia (fig. 385, C) and Z. linifoUa the pinnae are long and very narrow: the other extreme is represented by Z. Wallisii^ (fig. 388) with broad ovate segments reaching a length of nearly -5 metre and attached to the rachis by a short stallc; the veins are prominent and dichotomously branched. Other forms of pinnae are represented by Z. integrifolia, Z. fioridana, and Z. Loddigesii (figs. 389, 390, 395). The 1 Braun, A. (75=) p. 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: 1517px × 1648px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublishercambr, bookyear1898
