396 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 3 



PLATE 49 



Fig. 1. Herposiphonia tenella, portion of a main creeping axis to 

 show general branching habit of "langtriebe" and "kurz- 

 triebe," x 45. 



Fig. 2. Herposiphonia suhdisticha, portion of a main axis to show 

 branching habit of "langtriebe" and "kurztriebe," x 93. 



Fig. 3. Bostrychia radicans, a tetrasporic lateral branch, x 54. 



Fig. 4. Bostrychia radicans, portion of tip of a sterile lateral branch, 

 X 150. 



