146 ART. 12. K. YENDO. 



receptacles are well developed in the specimen and prove it to 

 be a member of the tribe Cymosœ. J. Agahdh brought down 

 Kutzing's species to the present variety. But I can not be 

 easily convinced by the opinion that such a plant as that in our 

 hands, with such characteristic receptacles, should be united with 

 Sargassum vulgare Ag., however considerable the variations which 

 the latter may undergo. If our plant be exactly identical with 

 Kutzing's, the species Sargassum Bahiense Kütz., I believe, had 

 better be restored. 



Localities: Var. Unearifolium ; Tosa Prov. (h. s. a.). 

 Var. foliosissimum ; Loochoo (K. Miyake, h. sc. coll.) 



Tribe 6. RACEMOSE. J. Ag. 



Sargassum Hinggoldianum Harv. 



Plate XVIII. 



Charact. of New Alg. p. 327.— J. Ag.: Spec. Sarg. Austr. p. 57.— Id.: 

 Anal. Alg. Cont. III. p. 51.— De Toni: Syll. Alg. III. p. 22.— Id.: 

 Phyc. Jap. Nov. p. 44. — Okam.: Enumer. Alg. of Jap. p. 146. — 

 Yendo: Prelim. List of Jap. Fuc. p. 156. 



= Sargassum coreanum J. Ag.: Spec. Sarg. Austr, p. 58. — Id.: Anal. 

 Alg. Cont. III. p. 51.— De Toni: Syll. Alg. III. p. 22.— 

 Okam.: Enumer. Alg. of Jap. p. 145. 



Description of the species. The present species has several 

 unique characters and is readily distinguished from all the other 

 species. While it is yet very young, measuring some one or two 

 feet in height, with the basal leaves still Unfällen, the stem is 

 compressedly triangular, ancipitous, usually not twisted, and saring- 

 ly serrated on the margins. The leaves are linear-spathulate, 

 4-6 cm. long 1.5-2 cm. wide, rounded at the apex and attenuated 

 below, ending finally in a short ancipitovi« petiole. They grow 

 alternately from the flat surface of the stems and are strongly 



