. The structure and development of mosses and ferns (Archegoniatae). Plant morphology; Mosses; Ferns. Fig. 200.—A, Horizontal section of an advanced embryo of O. Ctaytoniana, passing through the cotyledon and foot, X230; B, longitudinal section of the stem apex in a somewhat older embryo of O. cinnamomea, X460; C, transverse section of the apex of the primary root of the same, X460. through the calyptra until later, and in this respect shows its primitive character. The single vascular bundle of the petiole. Fig. 201.—Transverse section of a prothallium of O. Claytoniana, showing the lateral p

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. The structure and development of mosses and ferns (Archegoniatae). Plant morphology; Mosses; Ferns. Fig. 200.—A, Horizontal section of an advanced embryo of O. Ctaytoniana, passing through the cotyledon and foot, X230; B, longitudinal section of the stem apex in a somewhat older embryo of O. cinnamomea, X460; C, transverse section of the apex of the primary root of the same, X460. through the calyptra until later, and in this respect shows its primitive character. The single vascular bundle of the petiole. Fig. 201.—Transverse section of a prothallium of O. Claytoniana, showing the lateral position of the embryo (em), X75. approaches the collateral type, and is much like that of the cotyledon of Marattia. Stomata of the usual type occur on. 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 Campbell, Douglas Houghton, 1859-1953. New York, The Macmillan Company;

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Keywords: ., bookauthorcampbelldouglashought, bookcentury1900, bookdecade1910