. The structure and development of mosses and ferns (Archegoniatae). Plant morphology; Mosses; Ferns. FiG. 38.—^A, Symphyogyna sp.; B, Hymenophyton aabeilatun sporophyte; b, young shoot. X^yi; sp., young spores of the Green Algae. In A. multifida Goebel ((8), p., 337), discovered that the two-celled gemmae which had been described as formed simply by a separation of the cells of the thallus, were really formed within the cells and expelled from them through an opening, after which they divided into two cells and ultimately developed a young plant, much as an ordi- nary spore would do. The abse
. The structure and development of mosses and ferns (Archegoniatae). Plant morphology; Mosses; Ferns. FiG. 38.—^A, Symphyogyna sp.; B, Hymenophyton aabeilatun sporophyte; b, young shoot. X^yi; sp., young spores of the Green Algae. In A. multifida Goebel ((8), p., 337), discovered that the two-celled gemmae which had been described as formed simply by a separation of the cells of the thallus, were really formed within the cells and expelled from them through an opening, after which they divided into two cells and ultimately developed a young plant, much as an ordi- nary spore would do. The absence of cilia from these cells, which probably are the last reminiscences of the ciliated go- nidia of the aquatic ancestral forms, is to be accounted for by the terrestrial habit of Aneura. The branching is dichotomous, and is brought about by. 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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