26 IOWA ACADEMY OF SCIENCES. 



This name is applied provisionally to the form heretofore 

 commonly distributed and recognized throughout the United 

 States as S ferruginea Ehr. The European type, if one may 

 judge from the reports of authorities and from scant material 

 in herbaria of this country, is plainly different from ours and 

 the specific name suggested by Lister may be for the present 

 adopted. 



13. Stemonitis fusca Roth. 



Not common. One colony especially noteworthy has the 

 sporangia short, and the spores, while of the usual size and 

 color yet marked by unusual episporic characters, unlike any 

 observed in specimens from the eastern United States. 8. fusca 

 is here adopted to supplant both 8. fusca and 8. maxima, as the 

 separation seems impracticable. 



14. Stemonitis webberi Rex. 



Typical and not rare. On Arnold's peak, near Hot Springs, 

 but not in the central hills. The species seems to belong to 

 the plains proper, and is probably an adaptation to a climate 

 drier than that of Harney or Sylvan lake. 



15. Licea variabilis Schrad. 



Fine specimens were collected near Harney 's peak. 



16. Tubulina cespitosa Peck. 



Common in the central hills. One fructification 4-6 inches 

 wide stretched along the surface of a log for the distance of 

 many feet. 



17. Eutoriiium rozeanum (Rost.) Wing. 



One specimen < nly discovered. The plasmodium is at first 

 milk-white, then pink; later the fruit becomes umber-brown as 

 the spores mature. 



18. Gribraria aurantiaca Schrad. 



Specimens poor, but plainly referable to this species. 



19. Gribraria pyriformis Schrad. 



Material poor. Reference provisional, though probably 

 correct. 



20. Gribraria minutissima Schweinitz. 



In the crevices of a weathered pine log near Custer were 

 found beautiful specimens of this species. Schweinitz reported 

 it common in Pennsylvania and Carolina in his day. Speci- 

 mens from Iowa and from Missouri are in the university (Iowa) 

 herbarium. Its minuteness withdraws it from general recog- 

 nition so that it escapes collection, though probably widely 

 distributed. 



