EXPLANATION OF PLATE VIII 



Didcnna ftnrifnnnr (Hull.) Pers., p. 143. 

 Fig. 1. Sporangia of various ages, X 15. 

 Fig. 1 a. Spore of the same species, X 1000. 

 Fig. 1 b. A capillitial thread, X 1000. 



Pliysanini polyrrp/ialum Schw., p. 95. 

 Fig. 2. The sporangia, X 10. 

 Fig. 2 a. Spores, X 750. 

 Fig. 2 b. Capillitium, X 750. 



Lcocarpus fragilis (Dicks.) Rost., p. 112. 

 Fig. 3. Sporangia, X 6. 



Fig. 3 a. A group of sporangia, natural size, to show habit. 

 Fig. Z b. A single spore, X 1800. 



Physarclla oblontja (Berk, k C.) Morg., p. 109. 

 Fig. 4. A single sporangium, X 8. 

 Figs. 4 a and 4 b. Capillitium and spore respectively, X 900. 



Cratnium leucoccplialum (Pers.) Ditmar, p. 105. 

 Fig. 5. Sporangia, the first closed, X 10. 



Pliysarum slnuositin (Bull.) Weinm., p. 52. 

 Fig. 6. Plasmodiocarp, natural size; 6 «, X 4; see also Plate XIX., Fig. 15. 



Pliysarum virescens Ditmar, p. 61. 

 Fig. 7. Groups of sporangia, X 3 and X 8. 

 Fig. 7 a. Spores, X 750. 



Pliysarum viriJr Pers., p. 98. 

 Fig. 8. A single sporangium, X 25 ; ?, a, reverse. 

 Fig. 8 b. The same after spore-dispersal. 

 Fig. 8 c. Capillitium, X 750. 



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