EXPLANATION OF PLATE I 



Enter idin in splcndcns Morg., p. 151. 



Fig. I. /Ethalium, natural size. 



Fig. i a. Spore of the same species, >: 1400. 



Fig. I b. Capillitium of the same species, > 420. 



Dictydicsthalium plumbeum (Fr. ) Rost.. p. 152. 

 Fif. 2. JEthalium, natural si/.e. 



& 



Fig. 2 a. Sporangia and spores. >: 50 (after Schroeter). 

 Fig. 2 b. Persistent apices of the peridia. 



Lindbladia effnsa (Ehr.) Rost., p. 154. 

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

 Fig. 3<7. A single spore, >: 1400. 



Tubifera ferntginosa (liatsch) Machr., p. 156. 



Fig. 4. A group of sporangia, >: 5. 



See also Plate VII., Fig. 8. 



Cribraria dictydioides Cke. and Balf., p. 165. 



Fig. 5. Three sporangia, >: 15. 



Fig. 5^. A single sporangium, to show reticulate thickening, x 60. 



Fig. 5 b. A spore, >: 1400. 



Dictydinin cancellatnin (Batsch) Macbr., p. 172. 



Fig. 6. Sporangium, > 30. 



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



Ccratnnny.va fnitimlosa (Muell.) Macbr., p. 18. 

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

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



Hcmitricliia stipata (Schw.) Macbr.. p. 204. 



Fig. 8. Sporangia, x 6. 



Fig. 8. The capillitium of the same species. X 750 



Fig. 8 />. A single spore, X 1000. 



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