225 



66 g d O Mycologia 



was obtained. Cultures were attempted on Menyanthes and 

 Decodon in 1907, also without results. 5 



5. Uromyces Sporoboli E. & E. While on a visit to Mr. E. 

 Bartholomew at Stockton, Kans., in August, 191 1, the spot was 

 pointed out where this rust on Sporobolus longifolius had been 

 observed for several seasons following close upon a luxuriant 

 development of an Aecidium on Allium reticidatum, as if the two 

 might have genetic connection. Excellent material for testing 

 the assumption was supplied the following spring, and a sowing 

 was made April 29, 1912, upon Allium reticulatum, and also on 

 Malvastrum coccineum, Cassia chamae crista, Baptisia bracteata, 

 Apios tuber osa, Corydalis aurea, Zanthoxylum americanum, 

 Physalis pubescens, Asclepias verticillata, Vagnera stellata, and 

 Erigeron annuus, all known to have aecia of uncertain connection, 

 but without infection. 6 



Successful cultures supplementing previous work. The 

 facts derived from growing the following species of rusts supple- 

 ment those obtained from previous cultures in this series or from 

 cultures recorded by other American or European investigators. 

 In some cases the additional information recorded is of as great 

 value as if it were entered under the next heading of cultures not 

 before reported. For instance, the hitherto accredited species, 

 Puccinia vulpinoidea, P. Dulichii, and P. tosta, are reduced to 

 synonymy, and in so far simplify the naming of collections, beside 

 permitting of a clearer conception of the variation of specific 

 characters. A few cultures were made which are not reported, 

 as they add no new facts to those already established. 



Cultures of 19 12 



1. Puccinia Grossulariae (Schum.) Lagerh. The follow- 

 ing successful cultures were made, all being sown on Ribes Cy- 

 nosbati. 



From Carex pubescens, Lafayette, Ind., sown April 20, showing pycnia 

 April 29, and aecia May 9. 



5 Jour. Myc. 14: 12. 1908. 



6 For previous attempts see Bot. Gaz. 35 : 11. 1903 ; and Mycol. 1 : 13. 1912. 



