RHODOPHYCE.E, OR FLORIDE^ 



229 



that in L0wentaria clavellosa the fused carpogonial 

 branch in uniting with the auxiliary cell first 

 segments off a small cell which fuses with the 

 auxiliary cell, but in L. articulata union takes place 

 directly. Again, while in Chylodadia only single 

 gonimoblast cells are given off by the central cell 



FIG. 73.C)iampia parvula. a, b, c, d, successive stages in germination of 

 carpospore ; e, optical section of further stage in segmentation of spore ; /, 

 longitudinal section of apex of young plant highly magnified. (After Davis ) 



for the formation of carpospores, in Champia and 

 Lomentaria multicellular branched gonimoblast fila- 

 ments are given off, and the terminal cells of these 

 give rise to carpospores. 



Mr. B. M. Davis has made a minute study of the 

 development of the frond of Champia parvula from 



