. The algae. Algae. Fig. 122 Porphyridium cruentum. A-E, stages in nuclear and cell division ( x 1280). F, cells connected by stalks after division ( X 1280). (After Zirkle and Lewis.). Fig. 123 Porphyra. A, thallus ( x J). B, attachment disk with three primary blades and four (1-4) secondary. C, formation of carpo- spores. D-H, formation of spermatia in P. tenera. (A, D-H, after Ishikawa; B, C, after Grubb.) 224. 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

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. The algae. Algae. Fig. 122 Porphyridium cruentum. A-E, stages in nuclear and cell division ( x 1280). F, cells connected by stalks after division ( X 1280). (After Zirkle and Lewis.). Fig. 123 Porphyra. A, thallus ( x J). B, attachment disk with three primary blades and four (1-4) secondary. C, formation of carpo- spores. D-H, formation of spermatia in P. tenera. (A, D-H, after Ishikawa; B, C, after Grubb.) 224. 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 Chapman, V. J. (Valentine Jackson), 1910-. London, Macmillan; New York, St. Martin's Press

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Keywords: ., bo, bookcentury1900, bookcollectionbiodiversity, booksubjectalgae