64 2'^^' iiOTA MCA L MAGAZINE. ( v..i . xxx. Ko 350. 



Ptilota filicina J. Ag. 



Ejiicris, ]>. 76. — Id.: Till Alg. System. I\', \). Ck — Anderson: in 

 Zoc, II, p. 222.— De Toni: Syll. Al«r. IV, p. 1376.— Collins. Holden, 

 and Setch.: Phyc. Bor.-Amcr. No. 643. — Setch. and Gakdn.: Alg. 

 N. W. .\iiier. p. 3-iO. — Colllns: Mar. Alg. Vancouv. Island, p. 124-. 

 = P. pluniosa var. fiUcian Fakl. : Proc. : Amer. Acad. Vol. X, 

 p. 375.— Howe: in Erythea, Vol. I, p. 68. 

 ? = P. californica var. concinna Hary.: Ner. Bor.-Araer. II, p. 222. 



In the Herbarium of the Trinity College, Dublin, there is a 

 specimen collected by C. Wright at Hakodate and determined 

 by Harvey as P. concinna Hary. This specific name has never 

 been mentioned in the floristic lists of Japanese marine algae 

 by neither Haryey himself nor b}' any other person. In the 

 Herbarium, the specimen is mixed together with those from 

 California und P. californica /i concinna Hary. It is far from 

 doubt that Harvey held the two plants under the same 

 specific conception. In Phyc. Bor.-Amer. No. 643, the name 

 P. californica (3 concinna Hary. is mentioned under a synon}'- 

 mous position to P. filicina J. Ag. After examining Harvey's 

 specimen at Dublin, I am strongly inclined to refer them, at 

 least the specimen from Japan, to P. pectinata Kjellm., with 

 which the present species is easily to be confounded. The 

 synonymization as done by Setchell and Gardner, therefore, 

 is to be considered further. As a consequense, the occurrence 

 of P. filicina]. Ag. has been unknown within our boundarj'. 



I have carefully compared the specimen of Phyc. Bor.-Amer. 

 No. 643, in the copy kept in the Agardhian Herbarium at 

 Lund, with J. Agardh's originals of P. filicina. The\' were 

 exactly the same plant. And bringing some of the Kurilc 

 specimens of Ptilota, it was satisfactorily proved that they 

 were also the same. The species, so far as my material 

 show, appears not to come down further south to Hokkaido 

 (Yesso) proper. 



Locality. Kurilc Islands(!). 



Distribution. West coast o( North America, from Van- 

 couver Island to California. 



