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 . een, slippery. Filaments aline in height, flexuous, often very much curled, subulate, tapering to amore or less acute point, crowded, tufted, the tufts glued together at thebase by a slimy matter, simple. Stria sometimes indistinct; sometimeswell-defined and very close. Colour, under the microscope, a dull, yellowishgreen. This forms slimy patches, very treacherous to unwar
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 . een, slippery. Filaments aline in height, flexuous, often very much curled, subulate, tapering to amore or less acute point, crowded, tufted, the tufts glued together at thebase by a slimy matter, simple. Stria sometimes indistinct; sometimeswell-defined and very close. Colour, under the microscope, a dull, yellowishgreen. This forms slimy patches, very treacherous to unwary feet, onthe surface of rocks near high-water mark, often growing inplaces where it is only wet by the splashing of the sea, or onlycovered at spring tides, and where it is much within the influenceof rain. It is found on all our shores, on rocks of every geo-logical character indifferently, and is probably to be met with insimilar situations all over the world. It was first detected inSweden, by Weber and Mohr, and introduced to the notice ofBritish botanists by Mr. Dillwyn. B. Fig. 1. Calothrix scopulorum. Portion of the stratum :—the natural A tuft of filaments. 3. Apex of a filament:—both Ser. ChlorospeumejE. Fam. Oscillatoriea. Plate PANNOSA, Ag. Gen. Chad. Filaments destitute of a mucous layer, erect, tufted or aggre-gated, fixed at the base, somewhat rigid, not oscillating. Tube con-tinuous; endoclirome green, densely annulated, at length dissolvinginto lenticular sporidia. Calothrix (Ag.),—from koXos, beautiful, and&pi$, hair. Calothrix pannosa; filaments elongate, rigid, very much curled andtwisted, obtuse, densely interwoven together into lamellated tufts orhoney-combed strata; endoclirome blackish green, densely annulated. Calothrix pannosa, Ag. in Bot. Zeit. vol. x. p. 635. no. 42. Midi. 3rdSuppl. p. 13. Calothrix lamellata, Han. in Herb. 1842. Hab. Near high-water mark, growing either on rocks, on Fucus canalicu-latus, or
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Keywords: ., bookauthorharveywilliamhwilliam, bookcentury1800, bookdecade1840
