208 Illinois State Laboratory of Natural History. 



Ph. rubi, (Pers.) Winter. 



II., III. Hypophyllous. Sori, very small, scattered; ure- 

 dosori often very numerous, circular, orange-yellow, without 

 paraphyses; uredospores ovate or elliptical, each borne upon a 

 pedicel, epispore thin, finely echinulate, 12-15 by 15-20 ft; te- 

 leutosori rounded, sometimes confluent, black; teleutospores 

 about four to five septate, cylindrical, somewhat constricted at 

 the septum, ends ol)tusely rounded, the vertex furnished with a 

 conical, more or less deeply tinted apiculus, surface finely tu- 

 berculate, sometimes appearing smooth, dark-brown, 36 by 100 

 /t; pedicel as long as the spore or somewhat longer, very much 

 swollen in the lower half. 



On h*iihus rillosHs: Lee, Sept. 8, 5711, II., III.; JoDaviess, 

 Sept. 15, 5908, II.; Sept. 18, 5979,11., Sept. 19, 5999,11.; Ogle, 

 Sept. 23, 6147, II.; Jersey, Oct. 14, 6313, II.; McLean, Oct. 18, 

 1874, II. 



Triphragmium, Link. 



Teleutospores dark brown, three-celled, triangular, the di- 

 viding septa vertical and horizontal or oblique; uredospores 

 similar to those of Puccinia. 



In this genus secidioforms have not been certainly recog- 

 nized, though there are in some cases what have been called 

 two forms of the uredo, the one occurring in the spring on the 

 petioles and veins, the other late in the summer on the leaf 

 surfaces, and spermogonia are developed upon the upper leaf- 

 surface. 



The species are comparatively fcAv; none have so far been 

 found in Illinois. 



Ravenelia, Berkeley. 



Teleutospores many-celled, l)err3^-like, with vertical and 

 horizontal septa, usually with a series of hyaline cells at the 

 base, pedicellate or sessile. 



This curious genus is com})aratively little known, and its 

 standing among the UrecVniew has not been firmly established. 



