IOWA ACADEMY OF SCIENCES. 165 



C. rhuina, C. & E. Abundant on leaves of Ehus copallina, 

 E. pumila, E. toxicondendron, E. glabra, and E. aromatica. No. 22. 



C. richardicola, Atks. Common on potted plants of Eichardia 

 africana. No. 90. 



G. ricinella, Sacc. & Berl. Quite abundant on fading leaves 

 of Eicinus communis. No. 4. 



G. rosicola, Pass. Frequent on leaves of cultivated roses. 

 No. 124. 



G. rubi, Sacc. Abundant on leaves of Eubus canadensis. 

 No. 28. 



G. sagittarice, E. & K. Abundant on leaves of Saggittaria 

 variabilis. No. 30. 



G. serpentaria, Ell. & E. V. Nob uncommon on leaves of 

 Aristolochia serpentaria. No. 53. 



G. smilacis, Thuem. This species does serious injury to the 

 foliage of several species of wild smilax. No. 36. 



G. sordida, Sacc. Very abundant on leaves of Tecomia radi- 

 cans. No. 106. 



G. sorghi, E. & E. Very abundant, seriously affecting the 

 foliage, stems and sheaths of Sorghum vulgare, and th3 blaies 

 and sheaths of Zea mais. No. 16. 



G. stylismw, T. & E. A'oundaat on Bioeweria humistrata. 

 No. 59. 



G. truncatella, Atks. Common on the leaves of Passiflora 

 incarnata. No. 115. 



G. tuberosa, E. & K. Abundant and destructive to the foli- 

 age of Apoise tuberosa. No. 84. 



G. verbenicola, Ell. & E. Abundant on leaves of Verbena 

 Carolina. No. 61. 



G. vernonicG, E. & K. Common on leaves of Vernonia august- 

 ifolia. No. 119. 



G. violce, Sacc. Abundant on leaves of Viola odorata. No. 70. 



G. viticola (Ces.), Sacc. Completely defoliates in late fall, 

 the vines of Vitis labrusca and V. rotundifolia. Also found on 

 other species of wild grapes. 



AN ABNORMAL FERMENTATION OF BREAD. 



BY C. H. ECKLES. 



During the past summer my attention was called to a 

 peculiar abnormal condition which the bread baked in the 



