46 



52 Journal of Mycology [Vol. 11 



Canadensis, with no infection. Similar material on the same 

 species of host, gathered at Lafayette, Ind., was sown on Oxalis 

 violacea, Actaea alba, Macrocalyx Nyctelea, Apios Apios, and 

 Solidago ulmi folia, with no infection. What is probably the same 

 species of rust, on the same host, was sown in 1903 on eleven 

 other species of hosts with negative results. 6 



4. Puccinia on Carex gravida, sent by Rev. Bates from 

 Red Cloud, Neb., was sown on Steironema ciliatum, with no infec- 

 tion. Similar material from the same source was sown in 1903 

 on twelve other species of hosts with negative results. 7 



5. Puccinia ludibunda E. & E., sent by Mr. E. Bartholo- 

 mew from Stockton, Kans., was sown upon Steironema ciliatum, 

 Macrocalyx Nyctelea, and Xantkium Canadense, with no infection. 



6. Peridermium on Pinus rigida was sent by Professor 

 W. A. Kellerman from Sugar Grove, Ohio, in fine quantity, with 

 the suggestion that it would probably grow upon Campanula. It 

 was sown June 1st on what were supposed to be four plants of 

 C. Americana, but which proved to be Lobelia syphilitica, when 

 the plants came into bloom. The plants were unusually thrifty, 

 and conditions for success were good, but there was no infection. 

 Part of the same collection of spores grew on C. Americana, when 

 sown by Prof. Kellerman, 8 showing that they belonged to Coleo- 

 sporium Campanulac (Pers.) Lev. 



Sixteen species of rusts were successfully grown, that had 

 been studied with success before, and reported upon by the writer 

 and in part by other investigators. Mention of them here serves 

 to confirm previous work, and to give some additional knowledge 

 regarding hosts. 



I. Melampsora Medusae Thuem. Teleutosporic material 

 of this species on Populus deltoides was obtained near Lafayette, 

 Ind., and sown May 10 on Larix decidua and Euonymus obovatus. 

 The latter gave no result, but the former showed spermogonia on 

 May 25, yet owing to weakness of the hosts no aecidia formed. 

 The same collection was used to sow on Larix laricina (Du R.) 

 Koch (L. Americana Michx.) May 23, which showed spermo- 

 gonia June 4, but the host was too weak to permit aecidia to form. 



Teleutosporic material on P. deltoides at Spirit Lake, Iowa, 

 by the writer was sown May 10, on' Larix decidua and L. laricina, 

 with only feeble results on the former owing to the weakness of 

 the hosts. Another sowing was made May 23 on L. decidua, 

 which gave abundance of spermogonia on May 30, and an equal 

 abundance of aecidia on June 4. 



6 Jour. Mycol. 10:10. 1904. 



7 Jour. Mycol. 10:10. 1904. 



8 Jour. Mycol. 11:32. 1905. 



