136 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 26 



PLATE 15 



Fig. 1. Antithamnion breviramosus Daws. A determinate ramulus from the 

 type collection, X 300. 



Fig. 2-6. Pleonosporium globuliferum Levr. (after Levring). Fig. 2, Habit, X 

 6; Fig. 3, Upper part of a plant with polysporangia, X 30; Fig. 4, 

 Apex of a spermatangial branch, X 100; Fig. 5, Lower part of an 

 axis with rhizoids, X 100; Fig. 6, A polysporangium, X 100. 



