Tin; FUCACK.i; OF .lArA.V. li'J 



Sffiyassttm hcnilpltuUHèit Ac 



WAV XIIJ. Fig. 7-17. 



ypir. p. oD. — /(/.: System, p. 307. — J. Ag.: »Spec. I. p. 331. — hi: Spec. Sarg. 

 Austr. p. CA.— Id.: Aiuil. Alg. Cont. III. p. 50.— De Toxi: Syll. Alg. 

 III. p. 20. — Id.: Pliye. Jap. Nov. p. 45. — Dickie: Alg. Jaj). in Journ. 

 Linn. Soc, lV)t. Vol. XV. p. 45. — Okam.: Enunier. Alg. of Jap. }). 150. 

 = Fucus hcmiphyUus Turn.: Hist. Fiic. Vol. III. p. 80. Tab. 169. 

 = Spongocarpus hemiphijllus Kütz.: Spec. p. 633. — Id.: Tab. Thyc. X. 



Taf. 90. 

 = Sargassum hemiphijUoides Kütz.: Spec. p. 008. — Id.: Tab. Pliyc. 



XL Taf. 7. 

 = Surgassum liemiphijllum var. sinense J. Aü.: Spec. Sarg. Austi-. p. 



61.— De Toni: Syll. Alg. III. p. 26. 

 = Sargassum hcmiphgllum var. micromerum J. Ac,.: Spec. Sarg. Austr. 



p. 62.— De Toni: Syll. Alg. III. p. 27. 

 = Sargassum micromerum J. Ag.: Anal. Alg. Cont. III. p. 57. 

 = Sargassum chineuse J. Ag.: Anal. Alg. Cont. III. p. 50. 



Description of the species. The roots are ramose, irregularly 

 dividing as they extend, with the ramuli spreading radially and 

 horizontally. Some of the ramuli more elongate than the rest, 

 having the appearance of a stolon. I am not certain whether a 

 new shoot may start out from the stolon-like ramuli or not. 

 But none of the numerous specimens in our hands proves a 

 vegetative multiplication hy budding from the ramuli. 



The stem of a young frond usually branches at a point a 

 few millimeters above the root. The branches become nearly as 

 long as the primary frond and have similar characters in all 

 respects. The stems of the branches hardly exceed 1.5 mm. in 

 diameter. They are spirally beset with the characteristic asym- 

 metrical leaves, the interfolial distances ranoinsî from 3 to 8mm. 

 or more. 



The leaves on the lower portions of the stems are cuneate, 

 obovate or oblongo-elliptical, more or less attenuated below and 



