174 Illinois State Lahoratorij of Natural History. 



P. violse, DC. 



I., IT., TIT. Amphigenons, or often hypogenous. I. Spots 

 definite or mora or less diffused, sometimes covering large areas 

 of the l)lades and of the petioles; secidia irregularly (usually 

 densely) clustered, short, rather coarsely and deeply lacerated 

 and irregularly recurved; spores subglobose, epispore very thin, 

 minutely tuberculate, 12-18 ft; spermagonia not found. II., 

 TIT. Sori sparsely scattered, or collected in little irregular 

 groups upon discolored spots (^Ecidium violae, Schum.). II. 

 Spores subglobose, elliptical or obovate, epispore thick, sharply 

 echinulate, cinnamon-brown, nearly as dark as the teleutospore, 

 18-24 ^. IT. Spores usually broadly elliptical, frequently ir- 

 regular, little or not at all constricted at the septum, w^hich is 

 thick, vertex thickened, furnished with a conspicuous, tinted, 

 usually obtuse apiculus. and a somewhat similar projection 

 sometimes occurs on the side of the under segment near the 

 septum, base mostly obtusely rounded, epispore rather thick, 

 conspicuously but rather finely tuberculate, 18-24 by 26-37 ^; 

 pedicels hyaline, fragile, sometimes more or less lateral, not 

 longer than the spore. 



On Viola ciicullata: McLean, Aug. 4. 2284; McHenry, Aug. 

 22, 1207, IT., TIT., Aug. 31, 1391; Lake, Aug. 29, 1360; Ste- 

 phenson, Sept. 14, 5888, IT., TIL; JoDaviess, Sept. 20,6034, 

 TIT.; Ogle, Sept. 23, 6137, ITT. V. striata: Jackson, April 18, 

 4163, L, April 19, 4173, L; Union, April 24, 4245, I., TIT. V. 

 puhescens: McLean. June 24, 5285, IT., TIL, July 15, 2286, 

 Aug. 1, 2285, Aug. 6, 2287, Adams, June 28, 5326, IT., ITT. 

 Viola sj). : Kane. Aug. 30, 1381. 



P. Marise-Wilsoni, Clinton. 



I. Amphigenous. ^cidia regularly scattered, often 

 closely associated over large areas of the host; peridia lacini- 

 ated and excurved; spores subglobose, epispore thin, finely 

 echinulate, 15-18 /^; spermogonia scattered among the aecidia. 

 III. Sori hypogenous, irregularly clustered, little elevated, 

 long covered by the epidermis; spores irregular and various, 

 more often elliptical, not constricted at septum, the latter 

 strongly developed; apex obtuse, sometimes furnished with a 



