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 . ted to E. ramulosa, but is of a much softersubstance, usually more slender in its tube, and more repeatedly branched, so that its tufts are more bushy and feathery. Itfrequently lies prostrate, forming a widely spreading fleecycovering either to rocks or to mud, but this character is notvery constant. To Ent. erecta (Plate XLIII.) it is also veryclosely allied, but is of le
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 . ted to E. ramulosa, but is of a much softersubstance, usually more slender in its tube, and more repeatedly branched, so that its tufts are more bushy and feathery. Itfrequently lies prostrate, forming a widely spreading fleecycovering either to rocks or to mud, but this character is notvery constant. To Ent. erecta (Plate XLIII.) it is also veryclosely allied, but is of less plumy habit than that species, withless difference in diameter between the main stems and branchesand their lesser divisions, and the ramuli are shorter and moresquarrose. Still, it must be confessed that there is a greaterresemblance between these three species, in microscopic cha-racters, than a species-maker would desire ; and I remain of theopinion formerly expressed, that no great violence would be doneto truth by regarding them all as forms of one Protean species. Fig. 1. Enteromorpha clathrata ;—Tuft the natural size. 2. Part of abranch:—magnified. 3. One of .the ramuli:—highly magnified. .Plate. CCZ. Ser. CiilokospermejE. Fain. Ulvacea. Plate CCXLV. ENTEROMORPHA RAMULOSA, Book. Gen. Char. Frond tubular, membranaceous, of a green colour, and reti-culated structure. Fructification; granules, commonly in fours,contained in the cellules of the frond. Enteromorpha {Link),—from em-epov, an entrail, and p-opty^, form or appearance. Enteromorpha ramulosa; frond subcompressed, highly reticulated, irre-gularly divided; the main divisions long, densely set with lateralbranches; branches curved, curled or twisted, everywhere clothedwith short, spine-like ramuh. Enteromorpha ramulosa, Hook. Br. Ft. vol. ii. p. 315. Earv. Man. p. , Alg. Damn. no. 208. Enteromorpua clathrata, y. uncinata, Grev. Alg. Brit. p. 181. Ulva ramulosa, E. Bot. t. 2137. Ulva uncinata, Mokr.
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Keywords: ., bookauthorharveywilliamhwilliam, bookcentury1800, bookdecade1840
