MARINE ALGiE. 



69 



LXX. GlNNANIA. 



Frond cylindrical, tubular, distended, traversed by a 

 fibrous axis. Fructification spherical masses immersed 

 in the frond. 



1 . Ginnania furcellata. 



LXXI. Kalymenia. 



Frond blood-red, ribless, expanded, leaf-like, thick, of 

 dense structure. Fructification : — .1 . Spherical masses 

 of spores semi-immersed in the frond ; 2. Scattered 

 tetraspores. 



1. Kalymenia reniformis. 



2. „ Dubyi. 



LXXII. Irid^a. 



Frond expanded, leaf-like, thick, of dense structure, 

 dull red. Fructification : — 1 . Spherical masses of 

 spores immersed in the frond ; 2. Tetraspores scattered. 



1. Iridaea edulis. 



