. Ecological and systematic studies of the Ceylon species of Caulerpa . Fig- 44.—C parvula n. sp. (1 x 1). Fig. 43.—C parvala n. sp. (1 x 1). To judge from the very small dimensions of this plant—the diameter of the assimilation disc about 1 mm. and never exceeding 2 mm.—one might think it to be closely allied to /. exigua, Weber v. Bosse (loc. cit. p. 377, fig. 11, PI. XXXI.); but the character distinguishing this latter— its assimilation discs as if perfoliate, and situated as it were in one storey above the other—is entirely lacking. But as the assimilation discs are all in their dimen
. Ecological and systematic studies of the Ceylon species of Caulerpa . Fig- 44.—C parvula n. sp. (1 x 1). Fig. 43.—C parvala n. sp. (1 x 1). To judge from the very small dimensions of this plant—the diameter of the assimilation disc about 1 mm. and never exceeding 2 mm.—one might think it to be closely allied to /. exigua, Weber v. Bosse (loc. cit. p. 377, fig. 11, PI. XXXI.); but the character distinguishing this latter— its assimilation discs as if perfoliate, and situated as it were in one storey above the other—is entirely lacking. But as the assimilation discs are all in their dimensions rather constant, and the plant in other respects as far as its habitat is concerned, makes an impression quite different from C. nummularia, it seems to me to be distinguished as a special form. It forms, one may say, a transition species from the typical nummularia to the imbricata series. For if the side branches, instead of being procumbent were to grow upwards, and if, together with this, the branching were to become radiate, we should have C. imbricata. At Paumben, in the Island of Rameswaram, I have also collected some transition forms {C. imbri- cata, /. minor, fig. 40) between this form and C. imbricata. Geographical —^Ceylon : Rather locally in rock-pools at Beruwala, and at Paumben in the Island of llameswaram (South India) !
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmarinea, bookyear1906
