. Fresh-water biology. Freshwater biology. 176 FRESH-WATER BIOLOGY 4(3) Plant a steel blue, brownish or red, consisting of a single, branched row of cells, the branches of the same structure as the principal axis, irregularly placed and not in whorls. Chantransia Fries. Sexual reproduction resembling that of Batracho- spermum; carpogonia on lateral branches; tetra- spores resembling carpospores on the tips of cells. Plants dioecious. Fig. 250. Chantransia chalybea Fries. (After Kirchner.) X igo. 5 (2) Branches in whorls 6 6 (7) Plant purplish or bluish, beaded in appearance, due to whorls of d
. Fresh-water biology. Freshwater biology. 176 FRESH-WATER BIOLOGY 4(3) Plant a steel blue, brownish or red, consisting of a single, branched row of cells, the branches of the same structure as the principal axis, irregularly placed and not in whorls. Chantransia Fries. Sexual reproduction resembling that of Batracho- spermum; carpogonia on lateral branches; tetra- spores resembling carpospores on the tips of cells. Plants dioecious. Fig. 250. Chantransia chalybea Fries. (After Kirchner.) X igo. 5 (2) Branches in whorls 6 6 (7) Plant purplish or bluish, beaded in appearance, due to whorls of dichot- omous, accessory branches, composed of a single chain of cells on a pseudo-parenchymatous axis. Batrachospermum Roth. Plant several centimeters long: occasionally dioecious, the antheridia at the ends of acces- sory branches, the carpogonia frequently near the axis; the carpospores give rise to a proto- nema on which the adult form may originate as a branch. The protonema may also give rise to asexual spores which again may produce 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 Ward, Henry Baldwin, 1865-1945; Whipple, George Chandler, 1866-1924. joint author. New York, John Wiley & sons, inc. ; [etc. ,etc. ]
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfreshwa, bookyear1918
