100 



Jan. 1908] Cultures of Urcdineae in 1907 11 



6. Puccinia emaculata Schw., on Panicum capillare L., 

 collected in the vicinity of Lafayette, Ind., by Mr. F. D. Kern, 

 was sown on Psoralea Onobrychis, Viola cucullata, and Myosotis 

 palustris, with no infection. This rust was sown in previous 

 seasons on twenty other species of hosts. 6 



7. Puccinia Arundinariae Schw., on Arundinaria macro- 

 sperma Michx., collected at Clemson College, S. C, by Mr. H. 



D. House, was sown on Myrica cerifera, Ilex opaca, Smilax his- 

 pida, and Lysimachia quadrifolia, with no infection. 



8. Puccinia Schedonnardi K. & S., on Schedonnardus 

 paniculatus (Nutt.) Trel., collected at Boulder, Colo., by Mr. 



E. Bethel, was sown on Napaea dioica, Sorbus Americana, Xan- 

 thoxylum Americanum, Falcata comosa, Triosteum perfoliatum, 

 Laciniaria spicata, and Aster panicidatus, with no infection. Like 

 material was sown in previous seasons on eleven other species of 

 hosts. 7 



9. Puccinia on Muhlenbergia tenuiHora (Willd.) B. S. 

 P., collected at Red Cloud, Neb., by Rev. J. M. Bates, was sown 

 on Aesculns glabra, Lepachys pinnata, Napaea dioica, Hibiscus 

 Moscheutos, Symphoricarpos racemosus, with no infection. 



10. Puccinia Crandallii Pam. & Hume, on Festuca con- 

 finis Vasey, collected at Boulder, Colo., by Mr. E. Bethel, 

 was sown on Draba Caroliniana, Bursa Bur so-past oris, 

 Cardamine bulbosa, Hydro phyllum Virginicum, Mertensia Vir- 

 ginica, and Cassia Chamaecrista, with no infection. 



11. Puccinia montanensis Ellis, on Elymus condensatus 

 Presl., collected at Glenwood Springs, Colo., by Mr. F. D. Kern 

 and the writer, was sown on Delphinium tricorne three 

 times, with no infection. This material was found inter- 

 mixed with plants of Delphinium, species undetermined, but not 

 D. tricorne, which exhibited a very abundant development of 

 Aecidium Delphinii Barth., and it was assumed that the two 

 forms were alternates. Although the relationship was not estab- 

 lished by the attempted culture, yet it cannot be said to be ab- 

 solutely disproved, as the species of Delphinium on which the 

 Aecidium occurred was not used. 



Another collection of apparently the same species of rust 

 found on Elymus brachystachys Scribn. & Ball, at Eldorado 

 Springs, Colo., by the same collectors, was sown on Delphinium 

 tricorne, with no infection. 



See Bot. Gaz. 35'^. 1903; Jour. Myc. 5:52. 1902; 10 :10. 1904 

 13:12. 1906; and J?:192. 1907. 



7 See Bot. Gaz. 35 ill. 1903 and Jour. Myc. 15:192. 1907. 



