334 



1912) the results of 1908 were confirmed in part. In 1912 (Mycol. 7:70. 

 1915) infection resulting in the development of aecia was again obtained 

 on L. americanus using telial material on S. atrovirens from Indiana and 

 Ontario. 



39. PucciNiA Anthoxanthi Fckl. Symb. Myc. NSchtr. 2:15. 1873. 



On Poaceae: 



Anthoxanthum odoratum L., Newark, June 1908, (2244). 



40. PUCCINIA ASPARAGI DC. Flora Fr. 2:595. 1805. 



On Convallariaceae : 



Asparagus officinalis L., Hare'.s Corners, October 1896, F. D. 

 Chester; Smyrna, October 1904, C. O. Smith; Lewes, Aug. 14, 

 1907, (1681). 

 A discussion of the economic importance of this rust • in Delaware 

 will be found in Delaware Experiment Station bulletins 57 and 63. 



Sheldon (Science N. S. 16:235. 1902) shows that this species is 

 autoecious and that the urediniospores may carry the fungus over the 

 winter. He also claims to have successfully infected Allium cepa, all 

 three stages having been produced on that host. 



41. PucciNiA ASPERiFOLii (Pers.) Wettst. Verb. Zool.-Bot. Ges. Wein. 



35:541. 1885. 



Puccinia dispersa Erikss. Zeitsch. f. Pflanzkr. 4:257. 1894. 



Aecidium asperifolii Pers. Obs. Myc. 1:97. 1896. 

 On Poaceae: 



Secale cereale L., Newark, May 25, 1908, (2263). 



DeBary (Monatsber. K. Akad. d. Wiss. Berlin 211. 1866) was the 

 first to show the connection between the leaf rust of rye and Aecidium 

 asperifolii Pers. by sowing sporidia on Anchusa offi,cinalis L. and on 

 Lycopsis arvensis, pycnia and aecia resulting. Uredinia and telia were 

 obtained on rye following sowing of aecio.spores from the above men- 

 tioned aecial hosts. 



In America, Arthur (Mycol. 1:233. 1909) records successful infec- 

 tion experiments resulting in the production of pycnia on Lycopsis ar- 

 vensis L. following sowings of sporidia from Secale cereale L. The Ly- 

 copsis plants were grown from seed secured in Europe. These cultures 

 prove that the leaf rust of rye in Europe and America is identical. 



