. Ecological and systematic studies of the Ceylon species of Caulerpa. Marine algae. VMi CEYLON MARINE BIOLOGICAL REPORTS. justification for placing it only as a form under peltata var. typica, as Weber v. Bosse has done. Var. nummularia, exigua, Sec. should by equal right be included as forms, but Weber v. Bosse has given these a systematically higher rank in calUng them " varieties," , equal with var. typica. My contention is strengthened by the fact that O. imbricata itseK shows some variations that could also be classed together. And if we are to place it under any other form
. Ecological and systematic studies of the Ceylon species of Caulerpa. Marine algae. VMi CEYLON MARINE BIOLOGICAL REPORTS. justification for placing it only as a form under peltata var. typica, as Weber v. Bosse has done. Var. nummularia, exigua, Sec. should by equal right be included as forms, but Weber v. Bosse has given these a systematically higher rank in calUng them " varieties," , equal with var. typica. My contention is strengthened by the fact that O. imbricata itseK shows some variations that could also be classed together. And if we are to place it under any other form it could as well be classed under the small nummularia forms, as for instance /. parvula, as under any of the others. The plausibility is equally great in either case. Geographical distribution.—Ceylon : in the upper part of the littoral zone amongst rocks and corals, rather common ; Matara ! GaUe (/. minor), in many places on the reef (as below the Sailors' Bastion, Star Bastion, Aeolus Bastion, Pigeon Island)! Ambalangoda! Jaffna! South India: Paumben (/. minor, j. mixta) ! 18.—CAULERPA PARVULA, n. sp. The horizontal axes creeping with their side axes mostly procumbent. The whole plant thus forms mat-like tufts with the assimilation system on one level as in C. nummularia. The assimilation discs very small, about 1 mm.,never exceeding 2 mm. Under this name I will distinguish a very weak small form in the peltata group which I have observed in several places in the district investigated, and which is figured in figs. 43, 44. The mode of groAvth approaches that of C. nummularia in being richly tufted with the branches procumbent, and all the very small assimilation discs about on the same level, agglomerated Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Svedelius, Nils, 1873-1960. [Ceylon?
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmarinea, bookyear1906
