552 MINNESOTA BOTANICAL STUDIES. 



i. Gymnoconia interstitialis (SCHLECT.) LAGERH. Ured. Herb. 

 El. Fr. Tromso. Mus. Arshefter 17 : 84. 1894. (Cceoma 

 nitcns SCHWEIN. and Puccinia pecki ana HOWE.) 

 The aecidial stage (Cceoma nitens Schwein.), the common 

 raspberry rust, is abundant throughout the State. The teleuto- 

 spores have not yet been found in Minnesota. 



On Rubus strigosus MICHX. : Mille Lacs, (I) Jy. 1892, 



Sheldon 2709. 

 Rubus villosus AIT. : Kanabec, (I) Jy. 1892, Sheldon 



2908; Mille Lacs, (I) Jy. 1892, Sheldon 2713. 

 Rubus canadensis L. : Le Sueur, (I) Je. 1891, Sheldon 52 ; 

 Aitkin, (I) Je. 1892, Sheldon 2061 and 2145 ; Pine, (I) 

 Je. 1899, Freeman 499. 



Rubus sp. indet. : Winona, (I) Je. 1888, Holzinger 235 ; 

 Cass, (I) Je. 1893 ; Ballard 1393 ; Houston, (I) Je. 1899, 

 Lyon. 



Uropyxis SCHROETER. 



The puccinia on Amorpha species (P. amorpha Curt.) has 

 here been retained under Schroeter's genus Uropyxis. The 

 differences between Uropyxis and typical Puccinia are no less 

 than those between Phragmopyxis and Phragmidium. On the 

 other hand P. dcglubens might be included among the Puccinice 

 without much more serious objection than can be raised against 

 Puccinia elymi Westd. Puccinia petalostemonis Farlow has a 

 slight gelatinous exospore which certainly indicates relationship 

 with the Puccinia on Amorpha. Phragmopyxis according to 

 Dietel * is more closely related to Uropyxis than to Phragmi- 

 dium. I have seen biseptate spores in Puccinia petalostemonis 

 Farl.f The forms on the Leguminosse, therefore, seem to 

 form a natural group with sufficient distinguishing characters to 

 separate them generically from the typical Puccinia. This is 

 Schroeter's genus Uropyxis. Puccinia petalostemonis Farl. 

 connects it with the true Puccince. 



i. U. amorphae (CURT.) SCHROET. Hedw. 15: 165. 1875. 



On Amorpha canescens PURSH : Winona, (III) S. 1888, 

 Holzinger; Otter Tail, (III) Ag. 1892, Sheldon 3650; 

 Traverse, (III) S. 1893, Sheldon 7111 and 7180; 

 Ramsey, (III) S. 1898, Freeman ; Pope, (III) Ag. 1891,. 

 Taylor 1182. 



* 1. c., 70. 



t Ellis. N. A. Fungi, No. 1844. 



