. Plant studies; an elementary botany. Botany. 246 PL.^.NT STI'DIKS be solitary or several in a cell, and form \ ery striking and conspleuous objects (Figs. 213, 2lo). Spiroiji/ra and its associates are fnrtlier j)cculiar in pro- ducing no asexual spores, and also in the method of sexual reproduction. Two adjacent filaments put out tubular processes toward one another. A cell of one filament sends out a process which seeks to meet a corrcsjjonding process from a cell of the other filament. AVlien the tips of two such processes come together, the end walls disappear,. ; ^14. â '<p/r hrcn COI
. Plant studies; an elementary botany. Botany. 246 PL.^.NT STI'DIKS be solitary or several in a cell, and form \ ery striking and conspleuous objects (Figs. 213, 2lo). Spiroiji/ra and its associates are fnrtlier j)cculiar in pro- ducing no asexual spores, and also in the method of sexual reproduction. Two adjacent filaments put out tubular processes toward one another. A cell of one filament sends out a process which seeks to meet a corrcsjjonding process from a cell of the other filament. AVlien the tips of two such processes come together, the end walls disappear,. ; ^14. â '<p/r hrcn COIillrilnl \>y :i lillir, lull willHJiil I'lisiMli ii ZVL'iilr lills lirrli orLl.'ini/.rcl 111 carli itII; also, (lie n|i|irr ,â ,â 11 In llir I,â ft Ikis .â ll|,^lll|.h^,l 1,1 ,;niijiiL':ll,^ uilll till' icll t,i llll' riviit. At /; tli,T,^ ar,^ ,^,^lls fr tlir,^,^ tihiiiicnls, the ells iif Uie rciitfal uiie hav- ing C,)ll,illl,'alc,l W itll lit" tlK- Otliufs. â( 'At,DWELL. and a continuous tube extending between the two cells is organized (Figs. 21:!, 314). When many of the cells of two parallel filaments l)i'c(ime thus united, tlie appearance is that of a ladder, with the filaments as the side pieces, and the connecting tubes as tlie i-oiinds. While the connecting tidie is being devt'luped the con- tents of the two cells are organizing, and after the comple- tion of tlie tube the contents of one cell pass through and enter the other cell, fuse with its contents, and a sexual. 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. New York, D. Appleton and Company
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1900
