. Heredity and evolution in plants. Heredity; Plants. 214 HEREDITY AND EVOLUTION IN PLANTS the genus-name, Bennettites} Other fbrms, usually found as casts, are called Williamsonia, still others are known mainly as genera founded on leaf imprints. 144. ;âIn most of its purely vegetative characters, such as the anatomy of the stem and the. Fig. 98.âCycadeoidea Wielandi. Longitudinal section through the axis of a female inflorescence, or cone. /, old leaf-base; d, insertion of disc; J, erect seed, borne at summit of seed-pedicle inserted on convex receptacle; J, hair-covered bra
. Heredity and evolution in plants. Heredity; Plants. 214 HEREDITY AND EVOLUTION IN PLANTS the genus-name, Bennettites} Other fbrms, usually found as casts, are called Williamsonia, still others are known mainly as genera founded on leaf imprints. 144. ;âIn most of its purely vegetative characters, such as the anatomy of the stem and the. Fig. 98.âCycadeoidea Wielandi. Longitudinal section through the axis of a female inflorescence, or cone. /, old leaf-base; d, insertion of disc; J, erect seed, borne at summit of seed-pedicle inserted on convex receptacle; J, hair-covered bract. (After Wieland.) structure of the leaves, Cycadeoidea resembled modern cycads, but its reproductive branches were character- istically lateral, which is one of the most fundamental characteristics of the higher seed-bearing plants of to- day. Only two modern cycads {Macrozamia and Bow- 'â Cycadeoidea Bucklan'd = Bennetiites 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 Gager, C. Stuart (Charles Stuart), 1872-1943. Philadelphia, P. Blakiston's Son & Co.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectplants, bookyear1920
