. Embryogenesis in plants. Embryology. Fig. 17. Enibryogeny in the Anthocerotales A-D, Anthoceros fusiformis. A, Development of sunken archegonlum behind the apexofthethallus. B, The undivided zygote. C, The first, vertical wall. D, The first transverse wall. E-K, Anthoceros pearsoni. E, Young embryo in F, Segmenta- tion pattern as seen in cross-section. G, Older embryo in , showing foot develop- ment. H, J, Two stages in the development of the segmentation pattern, in cross- section. K, Older embryo in showing diff'erentiation of archesporium and development of haustorial foot.
. Embryogenesis in plants. Embryology. Fig. 17. Enibryogeny in the Anthocerotales A-D, Anthoceros fusiformis. A, Development of sunken archegonlum behind the apexofthethallus. B, The undivided zygote. C, The first, vertical wall. D, The first transverse wall. E-K, Anthoceros pearsoni. E, Young embryo in F, Segmenta- tion pattern as seen in cross-section. G, Older embryo in , showing foot develop- ment. H, J, Two stages in the development of the segmentation pattern, in cross- section. K, Older embryo in showing diff'erentiation of archesporium and development of haustorial foot. L, A. fusiformis. Germinating spore showing growth of thallus by an apical cell and characteristic segmentation pattern. M, Notothylas orbicularis. Four-celled embryo. N-Q, Notothylas breutelii. Stages in the development of the sporophyte as seen in R, Notothylas orbicularis. through base of sporophyte, showing the enlarged cells of the foot. (A-M, R, after Campbell; N-Q, after Lang.) (A-D, x 400; E-K, x 200; L, x 170; M, x 300; N-P, X 350; Q, x 250; R, x 200.). 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 Wardlaw, C. W. (Claude Wilson), 1901-. London, Methuen; New York, Wiley
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Keywords: ., bookcentury1900, bookcollectionbiodiversi, booksubjectembryology
