2O4 



frond bearing cuneate joints (Ryukyu), ~. Fig, 3 : peripheral cells, 

 3O-37 P across, ca. 40-47 n long, ^-J 9 . Fig. 4: surface-view of 

 peripheral cells, 3 ~- Q . Fig. 5-8 : fusion of two or three filaments 

 of central strand into one, R 1 3 . Fig. 9 : surface-view of thick, 

 walled peripheral cells (decalcified), - 2 ^. Fig. 10 : peripheral cells 

 of the same frond as fig. 9; 40-48 n across, 96-120 // long, ^|^. 

 Fig. 11 : peripheral layer shewing calc stratum, c, ^-p. Fig. 

 12 : the same decalcified, ^. Fig. 13-14 : fusion of filaments ! 

 walls of inner sides of fused portions thickened; 13: 3 ^ ; 14: &. 

 (Fig. 3-8 : Hamajima ; fig. 9-10: Kayaki ; fig. 11-14: Nomo Zaki). 



Halimeda Lamouroux 1812. 



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