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 . Islands. Descr. Filaments attached by a scutate base, three to twelve inches inlength, as thick as bristles, harsh to the touch, but much less rigidthan C. Melagonium, straight, densely tufted, of a beautifid yellow-greencolour, which fades, in the Herbarium, to a greenish-white. Articulationsabout as long as broad, or a little longer, their contents at length separatingint
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 . Islands. Descr. Filaments attached by a scutate base, three to twelve inches inlength, as thick as bristles, harsh to the touch, but much less rigidthan C. Melagonium, straight, densely tufted, of a beautifid yellow-greencolour, which fades, in the Herbarium, to a greenish-white. Articulationsabout as long as broad, or a little longer, their contents at length separatinginto two portions. Dissepiments slightly contracted. This is one of the many species of Conferva first brought tothe notice of botanists in the excellent monograph of Dillwyn,where a correct figure is given of it. It appears to be generallydiffused throughout the Atlantic, extending even within thetropics. It is always a more tufted plant than C. Melagonium,paler in colour, of scarcely half the diameter, and, though harsh,far less rigid and quite unable to support itself when removedfrom the water. B. Fig. 1. Conferva iEREA; a tuft:—of the natural size. 2. Portion of diffe-rent filaments:—magnified. Plate iUl ttltoi- H*«« * N. Ser. Chlorospekme.*. Fam. Confcrvece. Plate CCCXXVII. CONFERVA COLLABENS, Ag. Gen. Char. Filaments green, attached or floating, unbranched, composedof a single series of cells or articulations. Fruit, aggregated gra-nules or zoospores, contained in the articulations, and having, atsome period, a proper ciliary motion. Conferva (Plin.),—fromconferruminare, to consolidate; because some of the species wereused by the ancients for binding up fractured limbs. Conferva collabens; filaments elongated, straight, tufted, very thick (butof various diameters), gelatinous and flaccid, of a splendid seruginousgreen colour; articulations from once to once and a half as long asbroad, filled with a dense granular mass. Conferva collabens, Ag. Sgst. A
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Keywords: ., bookauthorharveywilliamhwilliam, bookcentury1800, bookdecade1840
