NORTH AMERICAN PARASITIC EXOASCE^. i^k 



Webber, H. J. Catalogue of the Flora of Nebraska. Rept. 

 Neb. Board of Agr. 1889: 175-302 (1-162). 1890. 



On p. 215 (75) mentions Exot/sc/ts deformans "on peacii lea\cs and plums." 



Webber. H. J. x\ppendix to the Catalogue of the Flora of 

 Nebraska. Tr. St. Louis Acad. 6: 1-47. 12 Mr 1892. — 

 (Contr. Bot. Dept. Univ. Neb. n. s. 3: 1-44. 14 Je 1892.). 



Mentions on p. 15 Exoascus fruii'i on common wild plum and Prunus 

 pumila. 



Zopf, W. Die Pilze in morphologischer, physiologischer. 

 biologischer und systematischer Beziehung. large 8vo. pp. 

 500. fio-s. 163. 1890.* 



Ill— 4. A 



