134 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 26 



PLATE 14 



Fig. 1-3. Pleonosporium rhizoides sp. now. from the type collection. Fig. 1, 

 upper portion of a sterile plant, X 26; Fig. 2, a specialized polyspor- 

 angial branch system, X 26; Fig. 3, A polysporangial branch, X 176. 



Fig. 4-5. Pleonosporium codicolum sp. nov., from the type collection. Fig. 4, 

 Part of a plant shown in position with respect to the surface of the 

 Codium host, X 50; Fig. 5, A poly sporangium. X 160. 



