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 . coasts. It was probably confounded byearlier British writers with C. albida, not having been recognized g2 as British until I gathered it in the year 1833. So many habi-tats have since been recorded for it, that it may be regarded asa generally distributed form, if not species. It most nearly agrees in character with C. albida, but the fila-ments are coarser, and far more r
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 . coasts. It was probably confounded byearlier British writers with C. albida, not having been recognized g2 as British until I gathered it in the year 1833. So many habi-tats have since been recorded for it, that it may be regarded asa generally distributed form, if not species. It most nearly agrees in character with C. albida, but the fila-ments are coarser, and far more rigid, standing out from eachother when the tuft is removed from the water; the colour is abrighter and fuller green; the ultimate branches are shorter andmore patent, often strongly reflexed, and the general habit is byno means spongy. It appears to prefer the clearest and purest water, growing onthe bare rock or among corallines in deep cold pools left by thetide, near the extreme of low water mark. Where I have seen it,both at Kilkee and Dingle, it could only be reached at springtides. Fig. 1. Cladophora refracta:—natural size. 2. Portion of a , 4. Ramuli:—more or less highly magnified. Mate, Ser. ChlorospekmEjE. Fain. Coiifervece. Plate CCLXXV. CLADOPHORA ALBIDA, Kiitz. Gen. Char. Filaments green, jointed, attached, uniform, branched. Fruit, granules or zoospores, contained in the articulations,having, at some period, a proper ciliary motion. Cladophora {Kiitz.),—from kXciSos, a branch, and 4>°pfa>, to bear. Cladophora albula; filaments exceedingly slender, flaccid, pale yellowgreen (whitish when dry), forming dense, silky, or somewhat spongy,soft, intricate tufts; branches crowded, irregular, the uppermostpatent and mostly opposite; ramuli opposite or secund; articulationsfour or five times as long as albida, Kiitz. Phyc. TJn. p. 267. Sp. Jiff. p. 400. Hassall, p. 224. Conferva albida, Huds
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Keywords: ., bookauthorharveywilliamhwilliam, bookcentury1800, bookdecade1840
