276 



RED ALG^. 



segments. 

 Serrated. 



bINUOUS. 



Spindle-shaped, 



Spines. 



Spores. 



Tetraspores, 



or 

 Tetragonidia. 



Top- shaped. 

 Tubercle. 



Veins. 



Vesicle. 

 Whorl. 



Divisions of the fronds. 



Toothed like a saw. 

 r The margin crooked, bending in and 

 I out. 



r Tapering to each end from a thick- 



^ ened middle. 



Small, thorn-like processes, 

 f The seeds of the Algae, and other 

 I Cryptogamic plants. 



The asexual spores of the Red Algae, 

 usually arranged in groups of fours. 



Like a top, or a cone with the apex 



downwards. 

 A small excrescence. 

 Small, linear thickenings of the frond, 



which resemble the veinings, or 



framework of the leaves of trees. 

 A bladder. 

 Ramuli arranged in a circle around 



the stem or branches. 



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