Sept. 1907] Cultures of Uredineae in ipo6 197 



May 4 it was sown on Lycopus Americanus, giving rise May 14 

 to numerous pycnia, and May 18 to aecia in abundance.^^ 



8. PucciNiA Eleocharidis Arth. — Teliosporic material on 

 Eleocharis palustris (L.) R. & S., sent by Mr. E. Bartholomew 

 from Stockton, Kans., was sown May 7 on Eupatorium perfoUa- 

 Him, giving rise to pycnia May 14, and to aecia May 22. Simi- 

 lar material on same species of host from near Lafayette, Ind., 

 was sown June i on E. perfoliatiim, giving rise to pycnia June 8, 

 and to aecia June 20. It was also sown on Napaea dioica, with 

 no infection. ^^ 



9. PucciNiA Andropogonis Schw. — Teliosporic material 

 on Andropogon scoparins Michx., sent by Rev. J. M. Bates from 

 Sargent, Neb., was sown April 24 on Pentstemon hirsutus, giving 

 rise to pycnia April 30, and to aecia May 10, both in abundance.^^ 



10. PucciNiA TOMiPARA Trel. — Teliosporic material on 

 Bromus purgans L., from Lafayette, Ind., was sown May 19 on 

 Clematis virginiana, giving rise to pycnia May 26, and to aecia 

 June 8, both in abundance.^^ 



11. PucciNiA suBNiTENs Diet. — Teliosporic material on 

 Distichlis spicata (L.) Greene, sent by Rev. J. M. Bates from 

 Red Cloud, Neb., was sown April 5 on Chenopodium album. 

 Bursa Bursa-pastoris, and Sarcobatus vermictilatus, giving a weak 

 infection only on the Chenopodium. As the Sarcobatus plant 

 soon died, another sowing was made May 5 on two other plants 

 of Sarcobatus, but with no infection. It was sown again May 

 10, and May 19, on Sarcobatus, still with no infection. Still a 

 fifth sowing was made May 29 on two plants of Sarcobatus, 

 and one of Chenopodium album, with a weak infection of the 

 latter, and with apparently a few pycnia showing on one leaf 

 of Sarcobatus. The plants of Sarcobatus were sent by Dr. P. B. 

 Kennedy from Reno, Nev., and had not become established when 

 the sowings were made. They were obtained where Distichlis 

 spicata grew intermixed, well covered with Puccinia subnitens, 

 and the Sarcobatus was well besprinkled with aecia, not dis- 

 tinguishable from those now known to belong to this grass rust.^* 

 The particular object in view was to determine experimentally if 

 Puccinia subnitens will grow on Sarcobatus. The single seem- 

 ing infection is doubtful, as it may have come from spores trans- 

 ported with the plants. The question remains an open one. 



^° For previous cultures see Bot. Gaz. i>9:273. 1900; and Jour. Myc. 

 5:53. 1902. 



^^ For previous cultures see Jour. Myc. 12 :23. 1906. 



"For previous cultures see Bot. Gaz. 29:212. 1900; Jour. Myc. 

 9:10. 1903; and 70:11. 1904. 



^^ For previous cultures see Jour. Myc. 11 :62. 1905. 



" For previous cultures see Bot. Gaz. 35 : 19. 1903 ; Jour. Myc. 

 7i:54. 1905; /.?:16. 1906. 



