sept..ifli4.] YENDO— NOTES ON ALG.F/ mw TO JAPAN. IT. 277 



Vancouver Island and determined by Haryev as P. senticulosa, 

 now kept in the Agardhian Herbarium, differs in various points 

 from the type ; and also that in the same Herbarium a co-type 

 of P. Morrowii Hary. is mixed together with P. senticulosa. 

 But these two are quite distinct. 



The specimen distributed under the specific name as No. 

 638 Phyc. Bor.-Amer., in the copy in my possession, differs 

 from the originals in having thick principal stems and by much 

 elongated and ramified terminal branchlets. 



Locality. Shima Prov (!). 



Distribution. Puget Sound, Washington. 



Heterosiphonia subsecundata Fkbg. 

 Rhodom. p. 643, Taf. 18, fig, 20. 

 = Dasya subsecundata J. Ag. Spec. Alg. II, p. 1181.-Farlow, 

 Proc. Amer. Acad. Art. Scieti. 1875, p. 235-Fari.ow, Anderso.n and 

 Eaton, Algc-e Exsic. Amer. Bor. No. 131. 



^Dasja caUithamnion Farlow, 1. c, p. 363, 

 We have to add one more Californian species to the algal 

 flora of Japan. The plant has a close resemblance with H. 

 notoensis Fkbg i:^Dasya notoensis Okam.) in general appear- 

 ance, from which, however, may be easily separated by having 

 the alternate pinnate branches at every third articulations of 

 the principal stems. 



The Japanese form has the siphons more or less spirally 

 arranged. But this character seems to be too trifle to mention 

 the plant in a separate position. 



Locality. Hakodate (!) ; Otaru Bay (!) ; Boshu Prov. (!). 

 Distribution. Hitherto known from California and Chili. 



Griffithsia Schousboei Mont. 

 In P. Webb, Otia Hisp. p. 11. PL 10- 

 The first record of the occurrence of Griffithsia within our 

 boundary was in 1895 by Holmes who reported G. corallitia 

 Ag. in Japan^\ Later in 1902 Okamura enumerated two spe- 

 ll Linnean Society Journal, Vol. 31, p. 258. 



