AMERICAN UREDINE^S. 331 



Fungi, No. 105 1, that the supposed Uromyces was associated 

 with genuine bilocular teleutospores, even in the same sorus, 

 and that the species must be transferred to the genus Puc- 

 cinia. He says regarding the Uromyces-like spores: " I 

 have not been able to find any other spores which represent 

 the uredo of the species, and never having seen the unicel- 

 lular spores in germination, there is, so far as we yet know, 

 no reason why they may not be the uredo spores." The true 

 nature of these spores remained in doubt until within a year 

 or so. They were brought to germination by Mr. M. A. 

 Carleton (Science 13:249) who found that they were neither 

 uredospores nor teleutospores, but a new sort, to which he 

 has given the name amfhispore. On account of their abun- 

 dance and highly attractive form the amphispores of Puc. 

 vexans are likely always to be considered the best representa- 

 tive of this kind of development. 



The true uredo form of this species, which has the general 

 characteristics of the uredo of other grass forms, has rarely 

 been collected, or even seen. So far as we know, the only 

 genuine record of it is in the Catalogue of the Flora of 

 Nebraska, 1890. It was found by Mr. H. J. Webber, the 

 author of the Catalogue, at Crawford, Neb., in the latter part 

 of July. He feels sure of the genetic connection, " having 

 several times found the uredospores and teleutospores in the 

 same sorus" (p. 68). From the context we learn that the 

 specimens bore only uredospores and amphispores, not true 

 teleutospores. It should be noted that the spores of this 

 species of whatever form are without paraphyses. 



59. Puccinia bartholom^i Diet. (1892. Hedw. 31:290.) 



59a. On Bouteloua oligostachya (Nutt. ) Torr., II. III., Rooks county, 

 Kans., Bartholomew. 



59b. On Bouteloua oligostachya (Nutt.) Torr., Ill, Valentine, Neb., 

 Bates. 



59^. On Bouteloua hirsuta Lag., Ill, Simeon, Neb., Bates. 



59^. On Atheropogon curtipendulus ( Michx.) Fourn. (Bouteloua curti- 

 pendula Torr.), Ill, Austin, Texas, Long. 



