. Dudley memorial volume, containing a paper by William Russel Dudley and appreciations and contributions in his memory by friends and colleagues ... Dudley, William Russel, 1849-1911; Botany. Fig. 9. A, B, two sections of a young archegonium with five neck canal cells; the ventral canal cell is not yet formed, x about 22S. C, a somewhat older stage, showing the egg, o, and the ventral canal cell, v. D, lower part of a nearly ripe archegonium. E, full grown archegonium which has failed to be fertilized, x about 90. F, cross-section of the neck of archegonium. G, an abnormal archegonium with un
. Dudley memorial volume, containing a paper by William Russel Dudley and appreciations and contributions in his memory by friends and colleagues ... Dudley, William Russel, 1849-1911; Botany. Fig. 9. A, B, two sections of a young archegonium with five neck canal cells; the ventral canal cell is not yet formed, x about 22S. C, a somewhat older stage, showing the egg, o, and the ventral canal cell, v. D, lower part of a nearly ripe archegonium. E, full grown archegonium which has failed to be fertilized, x about 90. F, cross-section of the neck of archegonium. G, an abnormal archegonium with unusually large axial cells. After fertilization there arises about the group of archegonia a tubular envelope, the perianth, which finally forms a very conspicuous vase-shaped sheath around the sporogonium, inside the involucre, which, like that of the antheridial receptacle, is made up of very much laciniated scales. (Fig. 1, C. D, per.) THE SPOROPHYTE. Only a few very young embryos were found and these were not well fixed, so that it was impossible to make a satisfactory study of the develop- ment of the embryo. The youngest sporogonia of which successful prepara-. 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 Stanford University, Cal. , The University
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
