. A textbook of botany for colleges and universities ... Botany. 260 Figs. 259, 260. — True moss: 259, longitudinal section of tip of young sporophyte, showing differen- tiation into amphithecium (three layers of cells below) and endothe- cium; 260, cross section of the same, the cells of the endothecium shaded. — After Figs. 261, 262. — True moss: 261, longitudinal section of tip of sporophyte showing (below) the several wall layers (amphithecium), the sporoge- nous layer (shaded) cut off from the endothe- cium, and (above) the beginning of the operculum; always develop sporogen
. A textbook of botany for colleges and universities ... Botany. 260 Figs. 259, 260. — True moss: 259, longitudinal section of tip of young sporophyte, showing differen- tiation into amphithecium (three layers of cells below) and endothe- cium; 260, cross section of the same, the cells of the endothecium shaded. — After Figs. 261, 262. — True moss: 261, longitudinal section of tip of sporophyte showing (below) the several wall layers (amphithecium), the sporoge- nous layer (shaded) cut off from the endothe- cium, and (above) the beginning of the operculum; always develop sporogenous i62, cross-section of same, showing (beginning at tissue; it is then character- except this heavy layer of walls, disappear, and the operculum slips off like a cap, leaving these heavy walls in a conical group of toothlike projections (peristome) anchored below to the rim. Some- times there are two sets of peri- stome teeth, in which case both the inner and the outer walls of the peristome-forming cells be- come thickened. There are many variations in peristomes in detail of development and in pattern. Apophysis.—The lower part of the capsule does not center) columella, single layer of sporogenous the amphithecium. — After chlorophyll tissueandstomata igie layer 01 sporogenous . , , j. t 1 c ceUs, and eight or nine wall layers developed from ^^ed by a__greater display 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 Coulter, John Merle, 1851-1928; Barnes, Charles Reid, 1858-1910, joint author; Cowles, Henry Chandler, 1869- joint author. New York, Cincinnati [etc] American book company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1910
