coballinte vee,^ japonic^. 31 



Coralliiui pilulifera is undoubtedly a variable plant seeming to 

 approach Cor. oßcinalis, L. on one side and Cor. S(iuamata, Ellis et Sol. 

 on the other. Nevertheless, the descriptions of the forms given by 

 Ruprecht I.e. sharply define the differences between them, two of 

 which were quite applicable to our plants. /. typica, Riipr. could not 

 he found in oiir coast, and I found another form hitherto not yet 

 described, /. intermedia. 



f. Sororia is a comparatively robust phmt, easily separable from 

 the other members. It is always found decumbent : the ventral 

 surface of the articuli are highly elevated while the upper remain flat. 

 This is characteristic of this form. When it has assumed a more 

 delicate appearances, it becomes almost impossible to distinguish from 

 /'. filiforiiiis. 



f. filiforiiris is a very slender plant, with the characteristic long 

 pedunculated conceptacles. The articuli of the main branches have no 

 projecting shoulders. It has always laciniated broad articuli at the 

 apexes of some branches, which was a character, according to the 

 author, to separate Cor. arhiiscula from Cor. piliUifera. 



f. intermedia is just an intermediate form between the above 

 mentioned two. Un a case where all the pinnules were conceptaculi- 

 ferous we are almost unable to separate it from Cor. officinalis, L. As has 

 been already noticed by Ruprecht, the terminal articuli, complanated 

 obovate, must not be neoflected to distinocuish from the latter. 

 Besides, there may be found two minute cylindrical pinnules at each 

 side of the conceptacles so as to form five articuli starting from one 

 articulus. This character is rarely found in Cor. officinalis, L. 



Found at the low tide mark, forming a dense tuft on rocks ; 

 also in tide pools. /'. Sororia : Hakodate ; Otaru ; Matsushima ; 

 Misaki. /'. ßliformis : Prov. of Bosh û ; Wakanoura (Prof. J. Matsu- 

 mura) ; Misaki ; Yenoshima ; Hakodate. /'. intenneJia : Hakodate. 



