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 . ecimen of Chauvins plant, received from M. Lenor-mand, and find them to agree in all essential particulars. Thechief difference is in colour, the Irish specimen having lost itsoriginal purple and acquired a greenish shade; no uncommon effect of decay. The genus Bangia has long been a receptacle for heterogeneousspecies, and though partially reformed by M. Chauvin in theexce
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 . ecimen of Chauvins plant, received from M. Lenor-mand, and find them to agree in all essential particulars. Thechief difference is in colour, the Irish specimen having lost itsoriginal purple and acquired a greenish shade; no uncommon effect of decay. The genus Bangia has long been a receptacle for heterogeneousspecies, and though partially reformed by M. Chauvin in theexcellent memoir above quoted, it can hardly be said that inmaking the present plant a species of Bangia he has more thanindicated its near affinities. For though doubtless allied toBangia, its structure is more simple than in the genuine membersof the genus, and it stands nearer perhaps to Spkaroplea ofAgardh. It might, however, be more properly regarded as thetype of a new genus characterized by the binate spores. Fig. 1. Tufts of Bangia elegans, growing on Gracilaria confervoides :—the natural size. 2. A frond, magnified. 3. A young apex. 4. A portionof the older part of the frond :—highly magnified. Tlate Ser. Chlorospermeje. Fam. Oscillatoriea. Plate PLICATA, Cam. Gen. Char. Frond globose or lobed, fleshy, firm, composed of continuous,radiating filaments, annulated within and springing from a sphericalglobule, and surrounded by, or set in, gelatine. Kivularia {Roth),—in allusion to the fluviatile habitat of some of the species. Kivularia plicata; fronds rather large, densely gregarious, gelatinous,compresso-plicate, often hollow and at length ruptured, dark green ;filaments wavy, associated in dichotomous series, tapering to a finepoint. Rivularia plicata, Carm. Harv. in Hook. Br. Fl. vol. ii. p. 392. Harv. 2. p. 222. Lichen corrugatus, Dickson ! (fide Borrer). Hab. On the rocky sea-shore, about liigh-water mark, or in situations o
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Keywords: ., bookauthorharveywilliamhwilliam, bookcentury1800, bookdecade1840
