Plate VIII. 



Figs. 1-7. Sanjassum patens Ag. 



1. Basal portion of a frond showing the lower region of a principal 

 branch. 



2. A lateral branch in the basal region of a frond. 



3. Apical })ortion of a sterile principal branch. 



4. A lateral branch in the lower part of a well-developed prin- 

 cipal branch. 



5. A ramulet on a lateral brancli of the frond shown in fig. 4. 



6. Apical portion of a lateral branch. 



7. A mature receptacular ramulet. 



Figs. 8-10. Sargassum patens var. Schizophylla (Kütz.) 



8. A lateral branch in the lower portion of a frond. 



9. A young lateral branch. 



10. A lateral branch in the middle portion of a frond. 



