354 



Fig. 350 Asparagopsis taxiformis 

 (Delile) Collins et Hervey. 



, longitudinal section and 

 6, transverse section of the thallus 



a, about 50:1; 6, 75:1). 



this form of ramification takes place several times, the branches 

 of each higher order becoming only shorter and less vigorously 

 developed. Fig. 349 a gives a representation of the ramification. 

 A part of a branch-system of a somewhat higher order is here fig- 

 ured in which the most vigorous branches of each pair are ramified 

 only, while the others are unbranched ; and the side-branches of the 

 ramified branches are all unbranched. The result of this ramification 

 is, that the fully developed thallus gets a beautiful featherlike 

 appearance. 



The thin branchlets consist of three rows of cells without 

 any central cell (Fig. 3496), the cells being alternately arranged 

 (cp. Fig. 351^1). On the other hand the thicker branches and the main 

 branches have a well developed central axis of a rather peculiar 

 appearance. 



ASKENASY has given a short description of the anatomical con- 



