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 . ice as great as in L. Carmichaelii, the colour is greatly brighter, and thesubstance more gelatinous and glossy. In other respects the plants closelyresemble each other. Filaments at first straight, three or four inches long,flaccid, at length becoming curled and crenate. Endochrome at first nearlyfilling the tube, gradually contracting as it solidifies, and at length forme
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 . ice as great as in L. Carmichaelii, the colour is greatly brighter, and thesubstance more gelatinous and glossy. In other respects the plants closelyresemble each other. Filaments at first straight, three or four inches long,flaccid, at length becoming curled and crenate. Endochrome at first nearlyfilling the tube, gradually contracting as it solidifies, and at length formedinto a lenticular sporidium, which, when ripe, bursts through the walls ofthe tube,leaving the filaments perfectly colourless. A more or less evidentdivision into cells is observable. This very pretty species is nearly related to the preceding,from which it is chiefly distinguished by the larger size, brightercolour, and more lubricous substance. It adheres far moreclosely to paper in drying, and does not so perfectly recover itsform after having once been dried. B. Fig. 1. Tuft of Lyngbya speciosa, on a rock:—of the natural size. of mature filaments. 3. A sporidium :—all highly magnified. Plat. , ?. Ser. Chlobospermex. Pam. Oscillatoriea:. Plate CCC. LYNGBYA ? FLACCA, Han. (i ex. Char. Filaments destitute of a mucous layer, free, flexible, elon-gated, decumbent, not oscillating. Tube continuous; endocliromegreen or purple, densely annulated and finally separating into lenti-cular sporidia. Lyngbya (Ag.),—in honour of Hans ChristianLyngbye, author of an excellent work on the Algae of Denmark. Lyngbya ? Jlacca; filaments short, tufted, straight or gently curved,simple, or having a few slender, proliferous, subulate, root-likeramuli, articulated; articulations shorter than their diameter, theendoclirome at length contracting into a small central sporidium. Lyngbya ? flacca, Harv. in Pkyc. Brit, list, vol. i. p. xv. Harv. Man. ed. 227. Hohmidium flaccum, Kiit
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Keywords: ., bookauthorharveywilliamhwilliam, bookcentury1800, bookdecade1840
