Catalogue of the Flora of Nebraska. 11 



14. PERONOSPORA4 II. 



29 PERONOSPORA Corda. 



. P. oxtbaph] BU.&KeU On leaves and young shoots ol phus 



nyetagineuSf causing much damage to the host. Blmwood, Ash- 

 land. June and July (Williams). 



30. PLASMOPARA Schroet. 



34. P. iialsikdii (Farlow) Berl. and De Toni. On leavi Sun- 

 flower ( Ifi-lianthits annuus), Lincoln, Oct. (Webber). Gr- 



weed (Ambrosia trijida), Wabash, Aug. (Williams). 

 81. 8CLER08PORA Schroet. 



35. S. gbamixicola (Sacc.) Schroet. (Peronospora gramin 



Oo Greeu and Yellow fox-tail (Setana viridis and 8. glauca I, Ash- 

 land, Weeping Water (Williams). Lincoln (Bessey). 



32. CYSTOPUS Lev. 



36. C. iPOMoK.K-PAxni'HAN.]-: (Sacc.) Farlow. On leaves and peti< 



of Morning Glory (Ipomcea Sp.) Richardson Co., Aug. (Webber); 

 Ashland (Williams). Very destructive, variously twisting and 

 distorting the leaves and petioles, anally causing them to drop 

 - off. 



CARPOPHYTA. 



15. COLEOCHAETACE.E. 



33. COLEOCHAETE Breb. 



37. C. irregularis Pringsh . Minden. In material collected by Dr- 

 Hapeman (Bessey). 



38. C. orbicularis Pringsh. 'Minden. Iu material collected by Dr. 

 Hapemau (Bessey) . 



16. ERYSIPHE.E. 



34. ERYSIPHE Hedvv. 



39. E. graminis DC. Couidia stage (Oidiam monilioides Link.) On 

 leaves of Wild Rye (Ely mus canadensis), Weeping Water (Wil- 

 liams). 



The Oidinm is the only stage frequently found here. I have 

 frequently observed this at Lincoln on various grasses, but ha\ ■ 

 never found the perithecia (Webber). 



17. sph.eriacej:. 



35. CHiETOMIUM Kunze. 



40. C. CHAETABUM Ehrenb. On decaying broom. Lincoln (Pound). 

 86. PIIYSALOSPORA Niessl. 



41. P. mk<;ask)Ma (Peck) Sacc. On leaves of Astragalus drummnndii. 



Belmont, Dawes Co., July. Quite destructive (Webber). 



