. The structure and development of mosses and ferns (Archegoniatae). Plant morphology; Mosses; Ferns. 540 MOSSES AND FERNS CHAP. examination reveals numerous oil-drops and some starch- granules, mingled with roundish bodies of albuminous nature. The latter absorb water and swell up so that they look like free cells. The wall of the spore is very thick. The perinium is thick. and transparent in appearance, and In the species under con- sideration provided with short recurved spinules. The interior, in microtome sections, is filled with coarsely granular cytoplasm, which often appears spongy, ow

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. The structure and development of mosses and ferns (Archegoniatae). Plant morphology; Mosses; Ferns. 540 MOSSES AND FERNS CHAP. examination reveals numerous oil-drops and some starch- granules, mingled with roundish bodies of albuminous nature. The latter absorb water and swell up so that they look like free cells. The wall of the spore is very thick. The perinium is thick. and transparent in appearance, and In the species under con- sideration provided with short recurved spinules. The interior, in microtome sections, is filled with coarsely granular cytoplasm, which often appears spongy, owing no doubt to the dissolving. 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