72 ART. 12. — K. YENDO. 



Description of tlie species. The lower portions of the frond are 

 not known. The stem is compressed with rounded edges, alternately 

 pinnately ramose. The leaves on the principal branches grow 

 patently from the edges of the complanated stem, with a very short 

 petiole : they are decompoundly pinnately or subdichotomously 

 divided with the segments linear and the margins shallowly and 

 irregularly dentated. An immersed rib traverses the whole length 

 of the leaf running into the segments almost to the tip of each. 



Vesicles are sjiherical, with complanated stipe nearly as long 

 as the diameter, coronated with one or two or often three pinnately 

 divided leaflets. They are axillary and solitary. A lateral branch 

 starts from the axil formed by a vesicle and the principal stem. 



Keceptacles unknown. 



Relation to other species. The specimen is fragmentary and the 

 appearance of the entire plant is not known. But the characters 

 shewn in the specimen at hand are quite unique and not referable 

 to any described species. Unfortunately the specimen is sterile so 

 that the exact systematic position can not be ascertained. The 

 plant, however, should probably be grouped under Schizojohyms J. 

 Aa. and placed near Sargassum patens. From the latter it may be 

 easily distinguished by the forms of the vesicles and the leaves. 



Locality. Kashiwa-jima, Tosa Prov. (T. Making) (!). 



ARTHROPHYCUS J. Ag. 



Sargassum kushiniofetise Yendo. 

 Plate XVI. Fig. 20. 



Prelim. List of Fuc. Jap. p. 157. 

 Diagnosis. Radiée scutelata, caule compresse, lœvi, distiehe pinnate; foliis 

 verticalibiis papyraceis in specimini exSiccato glaucis, lanceolatis, breve 

 stipitatis, inimerse eostatis, ai-^ute crispato-deutatis, irregulariter utriii- 



