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 . k colour. Filaments subulate,attenuated, connected together in branching, subdichotomous series, filledwith dark-green endochrome, which, is aunnlarly divided in the upper part,and coheres in oblong masses in the lower. Each filament springs from atransparent globule (or connecting cell). A very common plant on all rocky shores, growing either onthe rocks, or on the smaller
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 . k colour. Filaments subulate,attenuated, connected together in branching, subdichotomous series, filledwith dark-green endochrome, which, is aunnlarly divided in the upper part,and coheres in oblong masses in the lower. Each filament springs from atransparent globule (or connecting cell). A very common plant on all rocky shores, growing either onthe rocks, or on the smaller Algse, especially on Cladqpftorarupestris and CoraIIma officinalis. It forms small, hard wart-like balls or hemispheres, rarely as large as the seed of Sweet-Pea {Latlujrm odoratus), and sometimes completely covers theplant to which it attaches itself. Carmichael describes an allied species, B. applanata, said todiffer from B. atra in being flatter and thinner in substance, andgrowing in similar localities. This I have never seen. vol. ii. 2 G Fig. 1. Rivularia atra :—of the natural size. 2. Vertical section of a Some of the filaments :—magnified. 4. A filament separated and highlymagnified. III. Ser. CHLOEOSPERMEiE. Fam. Rivulariea. Plate NITIDA, Ag. Gen. Char. Frond globose or lobed, fleshy, firm, composed of continuousradiating filaments, annulated within, and springing from a sphericalglobule. Rivulahia,—so named by Roth, in allusion to the fiuviatilehabitat of some of the first discovered species. Rivularia nit Ida; frond (large), gelatinoso-coriaceous, lobed and plaited,often bullated, lubricous, shining deep green, filaments simple, verymuch attenuated. Kivi nitida, Ag. Sfyst. p. 25. J/nrr. in Hook. Br. VI. vol. ii. p. , in Muck. ,. part 3. p. 235. Wyatt, no. 50. p. 152. Endl. 3rd Suppl. p. 12. Kivilakia Imllata, Berk. Gl. Alg. t. ii. f. 1. /. Ag. Alg. Medit. p. 9. Endl,ZrdSnppl. p. 13. Scytoc
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Keywords: ., bookauthorharveywilliamhwilliam, bookcentury1800, bookdecade1840
