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 . butnot very closely, to paper. To the naked eye this plant has very much the aspect ofLyngbya Carmichaelii, with which (as I have already statedunder Plate CCC.) it is properly a congener; but it is readilydistinguished under the microscope, by the much longer cells, and, especially in advanced specimens, by the contraction- ofthe tube at the dissepiments. It bears a far cl
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 . butnot very closely, to paper. To the naked eye this plant has very much the aspect ofLyngbya Carmichaelii, with which (as I have already statedunder Plate CCC.) it is properly a congener; but it is readilydistinguished under the microscope, by the much longer cells, and, especially in advanced specimens, by the contraction- ofthe tube at the dissepiments. It bears a far closer resemblanceto C. bangioides, but is a shorter and comparatively stouterplant, and far less lubricous. The contents of the cells alsoare more granular and dense. It was originally discovered by Mr. W. Weston Young, afriend of Dillwyns, to whom that author was indebted for thedrawings from which the plates that illustrate his work on theBritish Conferva were engraved, and to whom he has dedicatedthis pretty little species. Fig. 1. Tuft of Conferva Youngana:—the natural size. 2. Portions of fila-ments in various stages. 3. Portion of a filament with a ripe sporidium:—both figures highly magnified. ; Ser. Pam. Chaetophorece. Plate CCXXVI. OCHLOCHtETE HYSTRIX, Thw. MSS. (Jen. Chah. Frond disciform, adpressed. Filaments cylindrical, radiatingfrom a central point, irregularly branched, consisting of a single seriesof cells, each of which is most commonly produced above into a rigidinarticulated seta. Endochrome green. Fructification {Thw., MSS.)—from o^Xor, a multitude, and xaiTn> abristle. Ochloch^te Hi/strix; plant very minute, pale green, hoary from itsnumerous rigid sets. Hab. On stems of grasses &c., in a lake of brackish water, called TheLittle Sea, near Wareham, Dorset, Rev. W. Smith; also in fresh-water ditches near Bristol, upon the leaves of mosses; very H. K. Thwaites. Descr.
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Keywords: ., bookauthorharveywilliamhwilliam, bookcentury1800, bookdecade1840
