April JAM.] YENDO:— NOTES OX ALGjE NEW TO JAPAN. Yin. 7,5 



specimens distributed by Kutzing under the species might have 

 been not uniform. 



Locality. Rebun Island (!), Rishiri Island (!), Kitami Prov.; 

 Oshoro, Shiribcshi Prov.(!); Fukuyama (Rosembaum), Hakodate 

 (!), Shiokubi (S. Xarita, No. Y. 7), Todohokke (Rosenbaum), 

 Oshima Prov.; Oma(!), Shiriya (Rosenbaum), Mutsu Prov.; 

 Oga, Ugo Prov. (S. Narita, No. a); Kashiwazaki, Echigo Prov. 

 (M. Nakajiura, Nos. 119, 150); Muroran, Iburi Prov.(!); Hidaka 

 Prov.(!); Oushima(!), Kinkwasan Island (Herb. Imper. Mus., 

 No. 134), Rikuzen Prov. 



Distribution. Atlantic coast of England and France; Medi- 

 terranean Sea. 



Polysiphonia ferulacea Suhr. 



in J. Ao.: Spec. Alg, II, 3, p. 980.— De Toni: Syll. Alg. IV, p. 892. 

 —Coll., Holden et SETCH.: Phyc. Bor.-Aracr. No. 340. 



? = Polysiphonia Gorgoniae Harv. Herb. Trin. Col., Dublin. 

 (Ousima specimen only). 



This species has been described by J. Agardh based on a 

 specimen sent to him from Suhr under the manuscript name. 

 He disposes the species among the group with "Keramidiis 

 urceolatis" (I.e., p. 911). The illustration of the plant under 

 P. breviarticulata in Xer. Bor. Amer. II, PI. XVI, B, 3, clearly 

 shows the C3 r stocarp of an ovate shape, and the describcr him- 

 self defines the species "Keramidiis globoso-ovatis sessilibus." 

 The type specimen of P. breviarticulata IIakv. and P. ferulacea 

 Si SB agree with the definition on this point. 



As already noted under the preceding species, the present is 

 not easily separable from it. The reliable distinctions between 

 them, .-is far as the diagnoses show, are that the former has 

 the tetrasporangia spirally disposed on the stichidid while the 

 latter has them unilaterally on the "distorted" ones; and that 



the former has the artieuli "omnibus diametro brevioribus atit 



subacqualiliiis " while the latter has them "primariis inediis 4—5 



pTo-, ramoruin duplo-longioribus." While examining numerous 



Specimens Ol plants which point tO these species 1 have repeatedly 



