30 ART. 12, — K. YENDü. 



=Fucus crassipcs Mert.: in Tuen, Hist. Fuc. Vol. II. p. 154. Tab. 131. 



= Cijstoseira crassipcs Ac: Spec. p. 69.— Id.: System, p. 286. 



= Sirophjjsalis crassipcs Kütz.: Spec. p. 602.— /(?.: Tab. Pliyc. X. Tat". 



56. fig. 1. — iNlARïENs: Preus. Exped. Tauge, p. 128. 

 = Sirophijsalis kakiloides Küxz.: Tab. Phyc. X. Taf. 56. fig. 2. 

 ? =Fiiciis kakiloides Mert. mscr? (sec. De Toni: Syll. Alg. 1. c). 



I have seen no authentic specimen of the present species. 

 But judging from the illustrations delineated by Turner in Hist. 

 Fuc, 1. c. and by Kutzing in Tab. Phyc, 1. c, I venture to 

 refer the specimens from eastern Hokkaido to this species. 



Description of the species. In a fully grown individual, the 

 frond attains o-6 feet in total height, solitarily attached to the 

 substratum by a hemispherical or subconical disc-shaped root. 

 The stem is simple, stout and cylindrical, measuring about half 

 a centimeter in diameter. It gradually diminishes in thickness 

 upwards and sends out several branches in all directions, which 

 further divide into fastigiate branchlets. The principal branches 

 at the lower parts of the axial stem are similar in appearance to 

 the latter, but are somewhat more slender with more abundant 

 scars of old branchlets. 



In a young or average plant the axial stem barely reaches 

 a few inches in height but has several branches already of con- 

 siderable length at its upper portion. These branches have their 

 basal regions incrassated into fusiform stems. I shall call these 

 branches "fusiform branches" for convenience sake. AVhile the 

 plants are yet very young, the incrassation of the stems is very 

 conspicuous and the future indefinite branches and branchlets 

 appear as several short, cylindrical but recurved processes at 

 the upper ends, as well as on the swollen sides, of the fusiform 

 Ijodies. Cf. PL II. fig. 13. Each apibal process of these fusiform 

 bodies elongates further into an axial member and the processes 



