286 IOWA ACADEMY OF SCIENCES. 



Neovossia lowensis Hume and Hodson. 

 Spore masses filling the ovaries, black; spores globose, 

 subglobose or ovate, brownish black, opaque; 16x20-24x 

 28u; enclosed in a hyline capsule; appendage hyaline, 

 slender, two or three times the length of the spore; 

 epispore apparently pitted. 



A careful comparison with the specimen in De Thue- 

 men's Mycotheca Universalis leads to the belief that the 

 Iowa specimens are specifically distinct. The spores differ 

 from those of Neovossia molinue (Thum.) Korn being darker 

 in color, broader, and blunter, and proportionally 

 shorter at the end opposite the appendage. The markings 

 of the epispore are somewhat coarser. 



Several attempts were made to germinate the spores in 

 order to throw some light upon the vexed question of the 

 ti'ue status of the genus Neovossia, but thus far 

 unfortunately all trials have resulted in failure. However, 

 based entirely upon the morphological distinctions it is the 

 author's belief that the genus has sufficient reasons for its 

 existence. 



Host. — Phragmitis communis Trin. 



Specimens from Iowa. — Material collected at Colo, Iowa, 

 by E. R. Hodson, Sept. 23, 1899. 



Enfyloma DeBary, Bot. Zeit. 1874: 101. 

 Entyloma compositarum Farl. 



Host. — Lepachijs jjinnafa Torr. & Gray., and Ambrosia 

 artemisicefolia, L. 



Specimens from Iowa.— Herb. Iowa State College (143) 

 Ames, A. S. Hitchcock; (136) Jewell Jc, G. W. Carver. 



Ex. Herb. J. C. Arthur (1813) Decorah, E. W. D. Hol- 

 way; Ex. Herb. Hume Ames, Iowa,H. Harold Hume; Ames, 

 G. W. Carver. 



Entyloma crastphiliun., Sacc. 

 Host.— Fhleum jjratense, h. 

 Specimens from Iowa. — Herb. Iowa State College (136 

 Decorah, E. W. D. Holway. 



