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 . s in a new cell, formed, it is true, by the elongationof an original cell, but subsequently separated from it by aseptum : this occurs in Tiresias, Bulbockate, and Coleochcete. InBraparnaldia, on the contrary, and its immediate allies thediaphanous prolongations of the filaments are septate, each con-sisting of a series of elongated cells. The sporangia, also, inBraparnaldi
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 . s in a new cell, formed, it is true, by the elongationof an original cell, but subsequently separated from it by aseptum : this occurs in Tiresias, Bulbockate, and Coleochcete. InBraparnaldia, on the contrary, and its immediate allies thediaphanous prolongations of the filaments are septate, each con-sisting of a series of elongated cells. The sporangia, also, inBraparnaldia glomerata, Ag., and Chcetophora elegans, Ag., inwhich species we have observed them, are formed within the ori-ginal cells of the ramuli, causing the latter to assume a moniliformappearance. Quaternate opseospermata, which are most probablygemmae, likewise occur in these species, as well as in those ofthe genus Stggeoclonium of Kiitzing. [I am indebted to Mr. Thwaites for the above description, andfor a beautiful figure from which our plate has been prepared.—] Fig. 1. Fronds of Ochlocheete hystrix :—natural size. 2. The same, mag-nified. 3. Small portion of a frond:—very highly magnified. flute
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Keywords: ., bookauthorharveywilliamhwilliam, bookcentury1800, bookdecade1840
