. Fossil plants : for students of botany and geology . Paleobotany. 24 CYCADALES [CH. sporophylls of Ceratozamia (fig. 393, C): in Macrozamia (fig. 394) the distal ends are prolonged as tapered processes. The surface of the strobilus of Stangeria is formed by imbricate and rounded. Fig. 395. Zamia floridana. I a, complete plant; a, main trunk; b, branch-scar; c, secondary root; d, primary tap-root. (^ uat. size.) I 6, I c, megastrobilus. (\ nat. size.) Id, megasporophyll. (Jnat. size.) I e, pinna. (J nat. size. After Wieland.) ends of sporophyUs (fig. 392, H) not unlike the cone-scales of Pinu
. Fossil plants : for students of botany and geology . Paleobotany. 24 CYCADALES [CH. sporophylls of Ceratozamia (fig. 393, C): in Macrozamia (fig. 394) the distal ends are prolonged as tapered processes. The surface of the strobilus of Stangeria is formed by imbricate and rounded. Fig. 395. Zamia floridana. I a, complete plant; a, main trunk; b, branch-scar; c, secondary root; d, primary tap-root. (^ uat. size.) I 6, I c, megastrobilus. (\ nat. size.) Id, megasporophyll. (Jnat. size.) I e, pinna. (J nat. size. After Wieland.) ends of sporophyUs (fig. 392, H) not unlike the cone-scales of Pinus excelsa or P. cembra. The megasporophylls of Zamia are expanded into regular cushion-like hexagons with a flat central area (figs. 389, B; 395, 16). The microsporophylls (figs. 389, A; 392, B) are in all genera. 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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