186 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 26 



PLATE 40 



Fig. 1. Platysiphonia clevelandii (Farl.) Papenf. Habit, X 8 (after Smith). 



Fig. 2. Polyneura latissima (Harv.) Kylin. Habit, X 0.6 (after Smith). 



Fig. 3-4. Polyneurella hancockii Daws. Fig. 3. Habit, X 0.8. Fig. 4. Detail 

 of apex, X 360. 



Fig. 5. Myriogramme divaricata Daws. Part of a tetrasporic blade, X 1.6. 



Fig. 6. Sorella pinnata Holl. Branching habit, X 8.5. 



