. Botany for high schools and colleges. Botany. 222 BOTANY. act, is that within a short time a thick coat of cellulose is formed over the new cell, thus producing a zygospore {H, Fig. 149). After a long period of rest, these zygospores. Fig. 149.—Pandorina Morum. A, non-sexual colony (or coenobinm) of 16 zoogoni- dia ; a, red spot; &, transparent anterior end of zoogonidium, to which the two cilia are attached. B, sixteen young sexual colonies about to leave the gelatinous wall. (7and T), colonies of sexual zoospores escaping. E^ F, G, conjugating zoospores H, zygospore in lesting stage (r
. Botany for high schools and colleges. Botany. 222 BOTANY. act, is that within a short time a thick coat of cellulose is formed over the new cell, thus producing a zygospore {H, Fig. 149). After a long period of rest, these zygospores. Fig. 149.—Pandorina Morum. A, non-sexual colony (or coenobinm) of 16 zoogoni- dia ; a, red spot; &, transparent anterior end of zoogonidium, to which the two cilia are attached. B, sixteen young sexual colonies about to leave the gelatinous wall. (7and T), colonies of sexual zoospores escaping. E^ F, G, conjugating zoospores H, zygospore in lesting stage (red). J, K, germinating zygospore, the contents escaping as a large red ciliated swarm- ?pore. L. ncT colony formed by the division of A", very young stage. M, the same colony as Z, in a further stage of development.—After OErsted. germinate by the bursting of the coat (exospore), when the protoplasmic contents escape as a ciliated swarm-spore {K, Fig. 149). After swimming about for some time, the swarm- I. 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 Bessey, Charles Edwin, 1845- [from old catalog]. New York, H. Holt and company
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