PLANTS OF IOWA 11 



STEMONITACE^G ORDER. 



Brefeldia, Rostafinski. 



55. B. maxima, (Fries) Rost. 



A large species, next to Fuligo in size. Plasmodium at 

 first white, then bluish; on rotton wood. 



Stemonitis, (Gleditsch) Rost. 



56. S. fusca, (Roth) Rostafinski. 

 Not common. 



57. 8. maxima, Schweinitz. 



On decaying logs of basswood. 



58. 8. morgani, Peck. 



Plasmodium white, on maple stems. 



59. 8. webberi, Rex. 



Coarser in appearance, though much the same in color. 



60. 8. smithii, Macbr. 

 Not common. 



Comatricha, (Preuss) Rost. 



61. C. longa, Peck. 



On decaying bark of willow and elm, in swampy places. 



62. C. irregularis, Rex. 



On decaying logs; not common. 



63. C. nigra, (Pers.) Schroeter. 



A small species easily recognized by its almost globose 

 sporangia mounted on long slender stalks. 



64. C. pulchella, (Bab.) Rost. 

 Not common. 



65. C. stemonitis, (Scop.) Sheldon. 

 Common on decaying wood. 



66. C. persoonii, Rost. 



On rotton wood; not common. 



Diachea, Fries. 



67. D. leucopoda, (Bull.) Rost. 



On fallen sticks and leaves in the orchard or foresi ; 

 not common. 



