EXPLANATION OF PLATE VII 



Diachea splendens Peck, p. 135. 

 Fig. i. Sporangia and hypothallus, x 25. 

 Fig. I a. Capillitium, >; 50. 

 Fig. i b. Spores, x 900. 

 Fig. i c. Portion of the capillitium, x 150. 



Didyinimn nigripes Fr., p. 90. 



Fig. 2. Sporangia, x 30. 

 Fig. 2 a. A spore, x 1400. 

 Fig. 2 b. Calcareous crystals from the peridial wall, x 750. 



Didyiniitin melanospermum (Pers.) Macbr., p. 88. 

 Fig- 3- Sporangia, >: 10. 

 Fig. 3#. A single spore, x about 1000. 



Didennu testaceuin (Schracl.) Pers., p. 99. 



Fig. 4. Sporangia ; the first exhibiting the two peridial walls and the spore- 



mass, >: 10. 



Fig. 4 a. Spore, >: 750. 

 Fig. 4 b. Capillitial threads, x 750. 



Diderma globosum Pers., p. 97. 



Fig- 5- Sporangia; the first with the outer peridium broken away, x 10. 

 Fig. 5. A single spore, x 750. 



spongiosa (Leyss.) JMorg., p. 83. 



Fig. 6. An jEthalium. borne on a grass-stem, natural size. 



Fig. tin. A spore, x 750. 



Fig. 6/;. Capillitium, with surface calcareous crystals, x 750. 



Diderma critstacciini Peck, p. 98. 



Fig. 7. A mass of clustered sporangia, to show habit of aggregation, natu- 

 ral size. 



Tnbifcra ferrnginosti (Hatscli) Macbr., p. 156. 

 Fig. 8. A single spoiv, x 1400. 



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