. The elements of botany for beginners and for schools. Botany. 170 CRYPTOGAMOUS OR FLOWERLESS PLAN're. [SECTION 17, aJl the Fresh-wafer Algae, such as those which constitule the silky threads or greeu slime of ruuuiiig streams or standing pools, and which were all called Confervas before their immense diversity was known. Some are formed of a single row of cells, developed each from the end of another. Others branch, the top of one cell producing more tlian one new one '" (I'ig- 564). Others, of a kind which is very common in fresh water, simple threads made of a line of cells, have the
. The elements of botany for beginners and for schools. Botany. 170 CRYPTOGAMOUS OR FLOWERLESS PLAN're. [SECTION 17, aJl the Fresh-wafer Algae, such as those which constitule the silky threads or greeu slime of ruuuiiig streams or standing pools, and which were all called Confervas before their immense diversity was known. Some are formed of a single row of cells, developed each from the end of another. Others branch, the top of one cell producing more tlian one new one '" (I'ig- 564). Others, of a kind which is very common in fresh water, simple threads made of a line of cells, have the chlorophyll and protoplasm of each cell ar- ranged in spiral lines or hands. They form spores in a peculiar way, which gives to this family the designation of conjugating Alga;. 512. At a certain time two par- allel threads approach each other more closely; contiguous parts of. 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 Gray, Asa, 1810-1888. New York : American Book Company
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1887
