Plate VII. 



Figs. 1-3. Sao'gassnm jmiiiatißdwn (Harv.) 



I. Sterile lateral branches in the lower region of a frond; from a 



specimen collected at Misaki. 

 2 and 3. Lateral branches in the upper and the middle portion 

 of a frond respectivtd}' ; I'n^m a specimen collected in Loochoo. 

 Fig. 4. Sargassum kashiwajimanum. 



Middle portion of a frond, showing tj'pical fnlcrant leaves. 

 Figs. 5-7 . Sargassum sefaceum. 



i). Basal portions of two shoots starting from a common scntellate 

 root. 



6. A lateral branchlet in the lower portion of a frond. 



7. Lateral branches germinate at an axil ; one of them not drawn 

 in its upper portion. 



