EXPLAXAIION OF PLATE I 



Eulrruliuin splniJiiis Moi^-. P- -H- 

 Fig. 1. /Ethaliuni, natural size. 

 Fig. 1 a. Spore of the same species, X 1400. 

 Fig. 1 /;. Capillitiuiii of the same species, X 420. 



Dictydiu'lharuini {^luinhnim (Fr.) Rost., p. 215. 

 Fig. 2. .Ethaiium, natural si/e. 



Fig. 2a. Sporangia and spores, X 50 (after Schroeter). 

 Fig. 2 /;. Persistent apices of the peritlia. 



Lindhladla rffusa (Ehr.) Rost., p. 204. 

 Fig. 3. A group of sporangia, X 30. 

 Fig. 3 a. A single spore, X 1400. 



Tuliifcra frnuiiiiiosa (Batsch) Maclir., p. 206. 

 Fig. 4. A group of sporangia, X 5. 



See also Plate VIL, Fig. 8; and Plate XIL, Fig. 14. 



Cnhrarla diclydioidcs Cke. &• 15alf., p. 222. 

 Fig. 5. Three sporangia, X 15. 



Fig. 5 fl. A single sporangium, to show reticulate thickening, X 60. 

 Fig. 5 Z-. A spore, X 1400. 



Didydiiim rtiiurllalitni (Batsch) Machr., p. 230. 

 Fig. 6. Sporangium, X 30. 

 Fig. 6 rt. A part of the peridial wall, seen from within, X 84. 



Ccratiomyxa fruliculosa (Muell.) Machr., p. 19. 

 Fig. 7. Three sporiferous pillars, X about 40. 

 Fig. 7 a. Tip of a single pillar, X 84. 



llcmitruli'ui slipata (Schw.) Machr., p. 262. 

 Fig. 8. Sporangia, X 6. 



Fig. 8 a. The capillitiurn of the same species, X 750. 

 Fig. 8 Z*. A single spore, X 1000. 



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