AMERICAN UREDINE^E. 333 



It does not, however, like that species, possess amphispores, 

 and its uredospores are of an entirely different class. 



Dietel (Hedwigia 31:290) has called attention to the resem- 

 blances between Puc. chloridis, Puc. dochmia (by which is 

 meant the Puc. muhlenbergim of this article), and Puc. bar- 

 tholonuvi. There is indeed much similarity between the first 

 and last named, in both teleutospores and uredospores, as 

 may be seen at a glance by comparing the figures under 

 numbers 56 and 59, or by comparing descriptions. The 

 uredospores, especially, are notably alike in being small, with 

 colorless, verrucose, and rather thick walls. Those of Puc. 

 bartholomcei, however, seem to have no tendency toward 

 apical thickening. 



In all three species referred to by Dietel the teleutospores 

 show a considerable intermixture of globoid spores with the 

 septum oblique or even vertical. This tendency is still more 

 marked in the true Puc. dochmia. A form on Doutcloua cur- 

 tipendula was collected at College Station, Texas, in 1889, 

 by N. S. Jennings, and was described by the collector ( Bull. 

 Texas Exper. Sta. No. 9:25) in 1890 under the name of 

 Diorchidium boutclouce, which appears to bear about the 

 same relation to Puc. bartholonuvi that Puc. dochmia does to 

 Puc. muhlenbergice, or possibly a closer relation. The uredo- 

 spores are very similar in size and other characters to those 

 of Puc. bartholonuci, but the teleutospores differ in being 

 almost wholly diorchidium-like. This form does not appear 

 to have been collected but once. The specimen in the present 

 distribution shows no unusual diorchidium tendency. 



The spelling of the specific name here used is in accord 

 with correct Latin form, as pointed out by Mr. E. Bartholo- 

 mew being slightly changed from the spelling in the original 

 publication. 



60. Puccinia kansensis Ell. & Barth. ( 1896. Erythea 



4:1.) 



60a. On Balbilis dadyloides (Nutt.) Raf. (Bucbloe dactyloides Engelm.) 

 ii. Ill, Rooks county, Kans., Bartholomew. 

 V-3 18 



