Ecological and systematic studies of Ecological and systematic studies of the Ceylon species of Caulerpa ecologicalsystem00unse Year: 1906 THE CEYLON SPECIES OF CAULRRPA. 121 manner of growth that this Gaulerpa in a natural state assumes a very characteristic appearance, which can be gathered from Mrs. Pease's description of the mode of growth of this plant in Jamaica when she says : (F. S. Collins, ' The Algre of Jamaica,' p. 237) : ' Gaulerpa davifera grew Uke little clusters of green grapes in big raggy masses.' Turner has also succeeded in describing the same characteristic appearance in
Ecological and systematic studies of Ecological and systematic studies of the Ceylon species of Caulerpa ecologicalsystem00unse Year: 1906 THE CEYLON SPECIES OF CAULRRPA. 121 manner of growth that this Gaulerpa in a natural state assumes a very characteristic appearance, which can be gathered from Mrs. Pease's description of the mode of growth of this plant in Jamaica when she says : (F. S. Collins, ' The Algre of Jamaica,' p. 237) : ' Gaulerpa davifera grew Uke little clusters of green grapes in big raggy masses.' Turner has also succeeded in describing the same characteristic appearance in his ' Historia Fucorum ' I., p. 126 : ' The name of F. davifer has been taken from thie appearance of the plant when recent, in which state the branches look as if merely a cluster of small clavate bodies.' But the idea of this mode of growth cannot be clearly gathered from even carefully prepared herbarium specimens (cf. for instance Wittr. et Nordst. Alg. Exsicc. No. 345 as 1,204), and this fact has not been sufficiently pointed out in the descriptions. This C. davifer a is a pronounced littoral alga, which is only met with exceptionally in deeper water, and then often under a changed appearance. I have frequently seen it so near high-water mark that at low-water it is only washed by the swell and is thus always fully exposed to almost the whole strength of the tropical sun. And, pressed against the substratum as it is, it might not unappropriately be compared with that type of heath-plants which has been called ' espalier plants ' (Warming)—it then receives that strength of Ught from practically one direction only. With respect to the size of the spherical branchlets, this varies a little. In general the majority of the forms seem as if thfey ought to be referred to the /. macrophysa, at least acoording to Weber v. Bosse's definition of this form in her Monograph (p. 361). Fig. 14.—C. davifera (turn.) c. ag. f. remota n. /. (1 x 1). As has been mentioned above, C. davi
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