106 APvT. 12. K. YENPO. 



of the latter species show an external resemblance to Rhodomela 

 Larix or Chordaria abietina, while those of the present species 

 exhibit no such appearance. In the aged fronds of Sargassum 

 Thimhergii the primary stem is quite hard to recognize, while in 

 the present species the short subterete stem remains unchanged. 



Localities: Fukushima, (h. h.f.), Hakodate (h.s.a.), Yesashi 

 (h. s. A.), Toppu (h.s.a.), in Oshima Prov.; Takashima (h.s.a.), 

 Yoichi (H.H. F.), Shiribeshi Prov.; Yangesliiri Isl., Teshio Prov. 

 (h.h.f.); Rishiri IsL (h.s.a.), Notoro (il.s.a.), Soya (n. n. f.), 

 Kitami Prov.; Akkeshi, Kushiro Prov. (h.s.a.); Nishiura, Kuna- 

 shiri Isl. (h.h.f.); Shana, Etorofu Isl. (h.h.f.); Pikuzen Prov. (!). 



/. imUicus: Pikuzen Prov. (R. Tsüge)(!); Boshû Prov. (!); 

 Sagami Prov. (!) ; Shima Prov. (!) ; Kii Prov. (!) ; Chikuzen Prov. ( ! ). 



Sarcfassurti confasiiin Ag. 



Plate XIV. Fig. 1-12. 



System, p. 801. — J. Ag.: Spec. I. p. 294. — Id.: Spec. Sarg. Austr. p. 

 m.—Icl: Anal. Alg. Cont. III. p. 60.— KÜtz.: Spec. p. 010.— De 

 Toni: Syll. Alg. III. p. 115.—/^.: Pliyc. Jap. Nov. p. 4().— Okam.: 

 Eiiumer. Alg. of Jap. 158. 



= Sargassum acinaria Martens: Preus. Exped. Tange, p. 128. 

 = Sargassum acinaria Kütz.: Tab. Phyc. XI. Taf. 17. fig. II. 

 = Fucus heterophjUus Ag.: Dec. No. 52. 

 'I = Sargassum fuliginosum Kütz.: Spec. Alg. p. 012. — Id.: Tal). Phyc. 

 XI. Taf. 19.— J. Ag.: Anal. Alg. Cont. III. p. 00.— De Toni: 

 Syll. Alg. III. p. 117.— Okam.: Enumei-, Alg. of Jap. p. 158. 

 — ? Martens: Pj-eus. Exped. Tange, p. 116. 

 1 = Fueus pallidus Turn.: Hist. Fuc. Vol. I. p. 150. Tab. 07. 



Description of the species. The root is a complanated disc 

 with a single stem I'ising from its top. The primary stem seems 

 never to exceed a few inches in height even in the mature plant. 

 The important function of the frond is played by the copious 



