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 . branches tapering toward the base, it puts on a multitude ofaspects according to the situation in which it grows. Near high-water mark it forms a short, shaggy pile, of slender fronds,spreading over rocks and stones, and most treacherous to thestepping of unwary feet, being pre-eminently slippery. A littlelower down, in the rock-pools, it has the appearance of the va-rietie


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 . branches tapering toward the base, it puts on a multitude ofaspects according to the situation in which it grows. Near high-water mark it forms a short, shaggy pile, of slender fronds,spreading over rocks and stones, and most treacherous to thestepping of unwary feet, being pre-eminently slippery. A littlelower down, in the rock-pools, it has the appearance of the va-rieties figured in our plate; and where fresh-water streams flowinto the sea, it becomes broader, with inflated tubes, and oftenof great length. Such forms closely resemble E. intestinalis,which, however, is never branched. Other varieties occur onfloating timber, on piles exposed to the tide, and on the verticalwalls of quays in tidal rivers; in fact, in nine cases out of ten,when such objects are seen clad in green, the appearance iscaused by the presence of this species. Fig. 1. Sundry varieties of Enteromorpha compressa:—of the natural A small portion of a branch magnified, to show the celhdar structure. :u\. Ser. Chlorosperme.^. Kam. Ulvacece. Plate LINKIANA, Grev. Gen. Char. Frond tubular, membranaceous, of a green colour and re-ticulated structure. Fructification, granules, contained in the cellsof the membrane. Enteromorpha (Link),—from evrepov, an entrail,and \$n,form or appearance. Enteromorpha Linkiana; fronds cylindrical, tubular, filiform, reticu-lated, pellucid, of a very pale green colour, membranaceous (rigidwhen dry), much branched; branches attenuate.—Grev. Enteromorpha Linkiana, Grev. Jig. Brit. p. 182. Hook. Br. Fl. vol. 31-1. Han. Man. ed. 1. p. 174. ed. 2. p. 213. Kiitz. Sp. Alg. p. 481. Hab. Between tide-marks. Annual. Summer. At Appin, Captain Distr. ? Descr. Root a minute (Use. Frond six to twelve i


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Keywords: ., bookauthorharveywilliamhwilliam, bookcentury1800, bookdecade1840