. Ecological and systematic studies of the Ceylon species of Caulerpa. Marine algae. Fig 29,—C. Chemnitzia (esp.) lam. f. ad peltatam. (3 x 1). Fig. 30. —C. Chemnitzia {E3F.) lam. f. ad uriferam. (a. b 1 X 1: c 3 X 1). p. 37. And it is naturally the existence of such forms as has induced Weber v. Bosse in her monograph to class C. Chemnitzia as a variety of C. racemosa (sens, lat.) thereby following up an idea suggested first by Askenasy loc. cit. p. 16) even if she lays stress on its transitionary position between "racemosa" {sens, strict. = uvifera) and peliata. But if now Chemnitz
. Ecological and systematic studies of the Ceylon species of Caulerpa. Marine algae. Fig 29,—C. Chemnitzia (esp.) lam. f. ad peltatam. (3 x 1). Fig. 30. —C. Chemnitzia {E3F.) lam. f. ad uriferam. (a. b 1 X 1: c 3 X 1). p. 37. And it is naturally the existence of such forms as has induced Weber v. Bosse in her monograph to class C. Chemnitzia as a variety of C. racemosa (sens, lat.) thereby following up an idea suggested first by Askenasy loc. cit. p. 16) even if she lays stress on its transitionary position between "racemosa" {sens, strict. = uvifera) and peliata. But if now Chemnitzia, as I have already shown, can develop to the same extent in the peltata direction as in the uvifera direction, it seems evident to me that it could with equal justification be classed under peltata as under racemosa-uvifera (sec. Weber v. Bosse). And judging from the variations of this species in Ceylon, one would be inclined to prefer the latter. But in my opinion both would be equally unliappy. For it is clear that C. Chemnitzia should be considered as a more original form than either uvifera or peltata. In reality it can develop into either. That in both variations the basal branchlets, , the first formed and earliest developed, are cylindrical seems to prove that this is an original character. If all the branchlets continue to be of this kind we get C. Icetevirens, wliile if some begin to show trumpet- shaped swellings, but with flattened poiats, we have the typical Chemnitzia, which^according as the variation assumes the disciform or the spherical shape—gives rise to peltata or uvifera, respectively. But it follows from this also that C. Chemnitzia is to be placed under neitiier the one nor the other, but. 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
