. The structure and development of mosses and ferns (Archegoniatae). Plant morphology; Mosses; Ferns. LYCOPODINE^ 5" characteristic feature of the forest vegetation of those regions. A few belong to the more temperate parts of Europe and Amer- ica, and a small number, e. g., S. rupestris, S. kpidophylla, grow in dry situations. The Gametophyte Hofmeister (i) included Selaginella among the other Pteri- dophytes he studied, but he was unable to make out the earlier. Fig. 295.—A, B. C, Three views of the youn^ antheridium of Selaginella Kraussiana, X450; D, an older stage of the same, X480;
. The structure and development of mosses and ferns (Archegoniatae). Plant morphology; Mosses; Ferns. LYCOPODINE^ 5" characteristic feature of the forest vegetation of those regions. A few belong to the more temperate parts of Europe and Amer- ica, and a small number, e. g., S. rupestris, S. kpidophylla, grow in dry situations. The Gametophyte Hofmeister (i) included Selaginella among the other Pteri- dophytes he studied, but he was unable to make out the earlier. Fig. 295.—A, B. C, Three views of the youn^ antheridium of Selaginella Kraussiana, X450; D, an older stage of the same, X480; E, F, two views of an older an- theridium of 5. stolonifera, X480; G, spermatozoids of 5, cuspidata^ X1170; x^ vegetative prothallial cell; s, central cells (after Belajeff). stages of development of the prothallium. Later Millardet (i) and Pfeffer (i) made further investigations upon the same sub- ject, and added much to Hofmeister's account, but were also unable to determine the earliest phases of germination. Belajeff (i) has since given an accurate account of the germination of the microspores, and during the past ten years the development of the macrospores and female gametophyte has been very thoroughly 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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