Phycologia britannica, or, A History of British sea-weeds, containing coloured figures, generic and specific characters, synonymes, and descriptions of all the species of algae inhabiting the shores of the British Islands . ry it has asilky appearance, and fades in the herbarium to a yellowish white. Sub-stance soft, membranous, but not strongly adhering to paper. In a recent number we gave a figure of Cladophora fracta, aspecies nearly related to the plant now described, and inhabitingsimilar places. Both species frequently fill the pools in whichthey grow, and, rising in the water, cover the
Phycologia britannica, or, A History of British sea-weeds, containing coloured figures, generic and specific characters, synonymes, and descriptions of all the species of algae inhabiting the shores of the British Islands . ry it has asilky appearance, and fades in the herbarium to a yellowish white. Sub-stance soft, membranous, but not strongly adhering to paper. In a recent number we gave a figure of Cladophora fracta, aspecies nearly related to the plant now described, and inhabitingsimilar places. Both species frequently fill the pools in whichthey grow, and, rising in the water, cover the surface with athick fleece, under which large bubbles of air, a portion of whichis oxygen disengaged by the plant under the influence of light, are confined. C. Jlavescens, besides its paler green colour, isreadily distinguished from by the much longer articu-lations, and their less granular contents. The specimens pub-lished under the name of in Mrs. Wyatts fasciculiare, in my copy at least, Fig. 1. Tuft of Cladophoka flavescens :—natural she. 2. Portion of fila-ments, to show the branching. 3. Hamulus, to show the character of thearticulations: —both magnified. Matt Ser. Chlorosperme i . Pam. Confervea. Plate CCXCIV. CLADOPHORA FRACTA, Kg. Gen. Char. Filaments green, attached, uniform, branched, composed of asingle series of cells or articulations. Fruit, aggregated granules orzoospores, contained in the articulations, having, at some period, aproper ciliary motion. Cladophora (Kiitz.),—from xAaSoy, a branch,and (jtopfto, to bear. Cladophora fracta; tufts irregular, entangled, often detached and t henforming lloating strata, dull green; filaments somewhat rigid, dis-tantly branched, the lesser branches somewhat dichotomous, spreading,with very wide axils, the ramuli few, alternate or commonly secund;articulations from three to six times as long as broad, at first cylin-drical, then elliptical, with contracted dissepiments. C
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Keywords: ., bookauthorharveywilliamhwilliam, bookcentury1800, bookdecade1840
