226" Illinois State Laboratory of Natural History. 



leaf, short, soon deeply split and recurved; spores elliptical, 

 epispore rather thick, densely tuberculate, 15-18 by 18-24 /*; 

 spermagonia numerous, uniformly scattered among the aecidia. 

 honey-yellow. 



Spots none ; peridia abundant, generally~[occupying all the lower 

 surface of the leaf, rarely a few on the upper surface, short, margin 

 crenulate; spores subglobose and subelliptical, brownish yellow when 

 fresh, yellowish when dry, .0007-.OOOS in. long. Peck, Am. Nat., Vol. 

 VIII., p. 215. 



On Psoraleafloribunda: LaSalle, June 20, 5248. 



M. leucostictum, B. C. 



Hypophyllous. Spots very small, scarcely evident, not 

 discolored; aecidia very small, irregularly clustered in little 

 groups, short, border narrow, recurved and many times split; 

 spores subglobose, minutely tuberculate, 11-12 by 12-16 P. 



Minute, scattered or collected into small patches. Berkeley, Grev., 

 Vol. III., p. 61. 



On Lespedeza procumbens : Johnson, May 11, 4616. 



This is named as above in Curtis' Catalogue of the Plants 

 of North Carolina, and described in Grevillea (III. p. 61) as a 

 variety of JE. orobi, Pers. The specific distinction is preferred 

 on account of the difference in size of aecidia and spores as well 

 as the appearance of the former. 



M. orobi, Pers. 



Hypophyllous. Spots usually conspicuous, yellow, not 

 thickened; aecidia scattered or collected in orderless groups, 

 small or medium size, short, border many times split and re- 

 curved; spores subglobose, usually somewhat angular, epispore 

 rather thick, studded with low obtuse tubercles, often appear- 

 ing smooth, 18-21 by 21-24 ^; spermagonia few, mostly on the 

 upper side of leaf, in the center of affected spots. 



On leaves of Amphicarptm monoica: LaSalle ; June 15. 

 4989. 



This is referred to the above named species with some 

 doubt as to the identification. The aecidia are collected in 

 more definite groups than are found in typical specimens of 

 the species. 



