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 . togetherby the waves; but Mr. McCallas statement is confirmed by ourfriend Mr. Andrews, who observed it cast up in similar abundanceat Arran. No species can be more distinct. The very patent, oppositebranches, and the invariably opposite, distichous, horizontal ramuliare its peculiar characteristics. It is most nearly related to C. Hut-chinsia and C. diffusa, of which it ha


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 . togetherby the waves; but Mr. McCallas statement is confirmed by ourfriend Mr. Andrews, who observed it cast up in similar abundanceat Arran. No species can be more distinct. The very patent, oppositebranches, and the invariably opposite, distichous, horizontal ramuliare its peculiar characteristics. It is most nearly related to C. Hut-chinsia and C. diffusa, of which it has the size, rigidity, and some-thing of the habit. But the opposite ramuli clearly separate itfrom either. Both the varieties represented in our plate arefrom Roundstone Bay. I cannot find that it has been noticed in any continentalwork. The name, given by Chauvin, under which it was re-ceived from M. Lenormand by Mr. Berkeley, does not appear tohave been published, and this is the only continental authoritywhich I have been able to ascertain for the species. Fig. 1, Cladopuora rectangllarts, var. a:—natural size. 2. Portion ofthe same:—magnified. 3. Var. fi:—natural she. 4. Portion of the same :— Ser. Fam. Confervea. Plate MACALLANA, Harv. Gen. Char. Filaments green, jointed, attached, uniform, branched. Fruit,aggregated granules or zoospores, contained in the joints, having, atsome period, a proper ciliary motion. Cladophora (Kiit:.)—fromxAdSoy, a branch, and cftopeo, to bear. Cladophora Macaliana; filaments setaceous, rigid, full green, very flexuous,loosely bundled together, excessively branched; branches alternate orrarely opposite, zigzag, very patent; ramuli short, recurved, simple, orpectinated, obtuse; articulations twice or thrice as long as broad;endoclirome rather dense. Hab. On the sandy bottom of the sea, in 4-10 fathom water. Annual. Summer. Dredged in Roundstone Bay, abundantly, Mr. Distr. Wes


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Keywords: ., bookauthorharveywilliamhwilliam, bookcentury1800, bookdecade1840