224 lUinois State Laljorafonj of Natural History. 



Spots orbicular, yellow ; subiculum not thickened nor excavated ; 

 peridia small, slightly elevated, subcircinating, numerous, the margin 

 distinctly scalloped and reflexed ; spores subglobose, orange, becoming 

 pale, .00056-.00062 in. in diameter.— Peck, Rep. N. Y. State Mus., XXIV., 

 p. 92. 



On leaves of Viola cucHllata : Union, April 24, 4246. 



This seems to differ from .¥j. riohr in the leaf-spots not 

 being thickened, in the asciclia and spores, and in the presence 

 of spermagonia. Specimens from Professor Trelease, labelled 

 j^. Petersii. B. & C, on Viola delphinifolimii. cannot be distin- 

 guished from the species descri))ed above and earlier mimed by 

 Peck. 



M. hibisciatum, Schw. 



Hyi)ophyllous. Spots usually few, large, thickened, defi- 

 nite, brown with a yellow border; peridia mostly densely 

 crowded, sometimes irregularly circinate, subimmersed; spores 

 broadly oval, about 18 l)y 37 fi. 



Spots orbicular, yellowish, confluent; peridia irregularly but dense- 

 ly scattered, slender, yellow; spores not compact but loose, yellowish. 

 ^Schweinitz, N. Am. Fungi. No. 2877. 



On leaves of Hihiscns niilifaris: McLean, July 7, 2429, 

 July 15, 5559. 



^. geranii, DC. 



Hypophyllous. Spots definite, not large, purplish or yel- 

 loAv, scarcely thickened; fecidia circinating, small, short, deeply 

 and rather finely split and much recurved: spores subglobose, 

 epispore thin, thickly tuberculate, 18-21 ^: spermagonia clus- 

 tered in the center of the spots, on both sides of leaf. 



On Gemniinti maciilatum: McLean, May 28.4752, May 29, 

 4806. May 30,4883. May 31, 4S66, June 1^881: Piatt, May 

 2^; LaSaile, June 16. 5205. 



M. impatientis, Schw. 



Hypogenous. Spots sometimes definite, purple, yellow- 

 bordered, more often effused, on the leaves scarcely thickened, 

 on the petioles and stems swollen; lecidia subcireinate or irreg- 



