186 



Arthur: Cultures of Uredineae in [91 



7. PucciNlA Caricis (Schum.) Schrot, on Carex aristata R. 

 Br., collected by Dr. J. F. Brenckle, at Kulm, N. D., was sown 

 April 7, on Urtica gracilis and Boehmeria cylindrica, with infec- 

 tion only on the former, giving pycnia April 13, and aecia 

 April 10. 



Another collection on Car ex stricta Lam., made in the vicinity 

 of Lafayette, Ind., by Mr. A. G. Johnson, was sown April 13, on 

 the same two hosts, producing infection only on Urtica gracilis, 

 giving pycnia April 22, and aecia April 27. Similar results were 

 obtained in previous years. 22 



8. Puccinia angustata Peck, on Scirpus atrovirens Muhl., 

 collected by Messrs. F. D. Kern and A. G. Johnson, at Carmel, 

 Ind., was sown April 7, on Lycopus americanus, giving pycnia 

 April 16, and aecia April 22. Another similar collection made by 

 Mr. A. G. Johnson near Lafayette, Ind., was sown on same host 

 April 13, giving pycnia April 25, and aecia May I. 23 



9. Puccinia Andropogonis Schw., on Andropogon virginicus 

 L., collected at Clarendon, W. Va., by Mr. W. H. Long, was 

 sown May 13, on Pentstemon hirsutus, giving pycnia May 23, and 

 aecia June 7. Another collection on A. scoparius Michx., made 

 at Boulder, Colo., by Mr. E. Bethel, was sown May 12 on 

 Comandra umbellata and Pentstemon alpinus, with infection only 

 on the latter, and not abundant, pycnia and aecia not being ob- 

 served until May 31. 24 



10. Puccinia pustulata (Curt.) Arth., on Andropogon fur- 

 catus Muhl., collected at Plainview, Colo., by Mr. E. Bethel, was 

 sown April 13, on Comandra umbellata and Pentstemon barbatus. 

 giving rise to infection only on the former, showing pycnia April 

 2y y and aecia May 9. Another collection by Mr. Bethel from 

 Colorado on Andropogon sp., was sown May 12 on Comandra 

 umbellata and Pentstemon alpinus, with infection only on the 

 former, giving pycnia in abundance May 20, and aecia May 31. 25 



22 For previous cultures see Bot. Gaz. 29: 270. 1900; 35: 16. 1903; Jour. 

 Myc. 8: 52. 1902; 12: 15. 1906; 14: 14. 1908; and Mycol. 2: 223. 1910. 



23 For previous cultures see Bot. Gaz. 29: 273. 1900; Jour. Myc. 8: 53. 

 1902; 11: 58. 1905; 13: 196. 1907; 14: 14. 1908; and Mycol. 1: 234. 1909. 



"For previous cultures see Bot. Gaz. 29: 272. 1900; Jour. Myc. 10: 11. 

 1904; and 13: 197. 1907. 



25 For previous cultures see Jour. Myc. 10: 17. 1904; and 12: 16. 1906. 



