330 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 12 



PLATE 7 



Fig. 1. C odium isahelae. Plant spread to show the habit of 

 branching. I. Isabela. x 1.0. 



Fig. 2. Chlorodesmis mex'tcana. Portion of a clump to show the 

 growth habit. Note that the matted basal region is rela- 

 tively loose and in no way like a stalk. I. Soccoro. x 1.4. 



