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 . d a very heterogeneous assemblage of plants, includingalmost every Alga which is outwardly gelatinous, and whoseinward structure exhibits a filamentous arrangement. Thussuch plants as Gloiosiphonia were included in it, as well as theClutiophora, and many others equally unlike each other. Thegroup to which the name is now restricted, is distinguished byhaving a gelatinous fr
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 . d a very heterogeneous assemblage of plants, includingalmost every Alga which is outwardly gelatinous, and whoseinward structure exhibits a filamentous arrangement. Thussuch plants as Gloiosiphonia were included in it, as well as theClutiophora, and many others equally unlike each other. Thegroup to which the name is now restricted, is distinguished byhaving a gelatinous frond of a definite form, filled with radiatingthreads, each of which terminates at its lower extremity in aglobular cellule. The plants thus associated have a strong affi-nity together, but are not exclusively marine, several of theminhabiting fresh water, and others growing on moist of the latter have the property of secreting lime in theirtissues, if not in such a regular manner as the Corallines, in amanner approaching to it. None of the marine species exhibitthis property. Fig. 1. Patches of Rivularia nitida:—the natural size. 2. Portion of thegelatinous frond. 3. Filaments:—magnified. FlcuU ? TS-aeveinxg. Sit. Chloeospbrme i , Fam. Oscillatoriea. Plate CCCXVI. SCHIZOSIPHON WARRENLE, Casp. Gen. Char. Frond globose or lobed, gelatinous, composed of closely-packed, annulated, radiating, sheathed filaments, each of whichsprings from a pellucid cell. Sheath gclatino-mcmbranous, verticallycleft into innumerable hair-like shreds. SchizosiiJION (Kiilz.),—from o-x^co, to divide, and o-«£<w, a tube. Scuizothrix Warrenia,; fastigiately branched; the lowest cell of thebranches wider, hemispherical, lateral; sheaths dark-coloured, thefibres often spiral; apices of the branches much attenuated. Casp. Schizosiphon Warrenise, Caspar)/ in Ann. and Mag. Nat. Hist. 3rd series,vol. vi. p. 266. t. 8. Hab. On rocks at high-water mark, chiefly in places exposed to th
Size: 1193px × 2095px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorharveywilliamhwilliam, bookcentury1800, bookdecade1840
