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 . r. A well-marked species of Rivularia, easily recognized and notuncommon on several parts of our shores. It was first noticedby the late Captain Carmichael on the west coast of B. nitida, it becomes hollow in age, but may always beknown from that species by its much darker and duller colour,smaller size, and the difference of habitat. The fronds are veryirregu
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 . r. A well-marked species of Rivularia, easily recognized and notuncommon on several parts of our shores. It was first noticedby the late Captain Carmichael on the west coast of B. nitida, it becomes hollow in age, but may always beknown from that species by its much darker and duller colour,smaller size, and the difference of habitat. The fronds are veryirregular in shape, and alter considerably as they advance to maturity, by the lateral pressure of one frond on another. I can-not say anything to the collector of specimens in praise of thebeauty of this production; what it has in that way it keeps con-cealed, or reserves for microscopic eyes. Fig. 1. Cluster of fronds of Rivularia plicata, on a piece of rock :—the na-tural size. 2. One of the fronds, cut vertically to snow the hollow A vertical portion of the gelatine, with imbedded filaments. 4. Someof the filaments removed and pressed asunder:—the latter figures more orless highly magnified. Tlate :mSmnJ*>
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Keywords: ., bookauthorharveywilliamhwilliam, bookcentury1800, bookdecade1840
