198 Journal of Mycology [Vol.13 



although I venture the opinion that if the teliosporic material 

 had come from Nevada, instead of Nebraska, the sowings would 

 have been successful. 



12. PucciNiA POCULiFORMis (Jacq.) Wcttst. — Teliosporic 

 material on Agrostis alba L., brought from Fair Oaks, Ind., was 

 sown May 2 on two plants of Berheris vulgaris, both showing 

 abundant pycnia May 9, and aecia May 18. 



Aeciospores from these cultures were sown May 31 on Avena 

 sativa, Hordcnm vulgarc (Great Beardless), and Triticum vulgare 

 (Jones' Silver Sheaf), without infection in the first case, and 

 with sparing infection in the other two cases, the former showing 

 uredinia June 12, and the latter somewhat later. 



Teliosporic material on Elymus canadensis L., sent from 

 Racine, Wis., by Dr. J. J. Davis, was sown May 2 on Berheris 

 vulgaris, showing pycnia May 9, and aecia May 18. Aecia from 

 this culture were sown May 31 on Triticum vulgare (Jones' Silver 

 Sheaf), and Sccole cereale (Mammoth Winter Rye), with no 

 infection.^" 



13. PucciNiA TRANSFORMANS Ellis & Ev. — Teliosporic 

 material from a greenhouse plant of Stenolobium Stans, which 

 had been infected a year previously, was sown May 7 on two 

 healthy plants of the same species, and gave rise to pycnia May 

 22, and to telia May 30. A sowing on two other plants was 

 made May 10, showing pycnia May 26, and telia May 31.^^ 



14. PucciNiA Xanthii Schw. — Teliosporic material on 

 Xanthium sp., obtained in the vicinity of Lafayette, Ind., about 

 the middle of April, was sown on Xanthium seedlings April 20, 

 and gave rise to translucent papillae simulating pycnia April 26, 

 and open telia May 3. Another sowing May i gave pale papillae 

 about May 18, and open telia about May 26.'^ 



15. PucciNiA SiLPHii Schw. — Teliosporic material on 

 Silphium integrifolium Michx., obtained the last of March near 

 Lafayette, Ind., was sown April 26 on Silphium pcrfoUatiim, giv- 

 ing rise to pale papillae May i, and open telia May 4. Another 

 sowing was made on 6". terehinthinaccum May i, giving rise to 

 pale papillae May 8, and open telia May 14. Similar material 

 from another locality was sown May 3 on S. integrifolium, S. per- 

 foliatum and 5". terehinthinaccum , giving infection in usual way in 

 each instance but exact data not taken. -^. It was observed that 

 the infection on S. integrifolium was more rapid in its growth 

 and more abundant than on the other hosts. In the report of last 



"For previous cultures see Jour. Myc. 5:53. 1902; 1/ :57. 1905; 

 12:17. 1906. 



" For previous cultures see Jour. Myc. 12 :22. 1906. 

 "For previous cultures see Jour. Myc. /.?:20. 1906. 

 ** For previous cultures see Jour. Myc. 12 :21. 1906. 



