314 NATURAL HISTORY BULLETIN. 



47. Uromyces epicampus Diet. & Hohv. (1897. Bot. 

 Gaz. 24: 23). 



47a. On Epicampes macroura Benth. III. Near City of Mexico, Mex., 

 Hoi way. 



Orig. Descr: " Sori epiphyllous, between the veins, linear, naked: uredo- 

 sori yellowish-brown; spores mostly round, 28-32//; epispore thickly set 

 with short spines; germ-pores numerous, scattered over the whole sur- 

 face: teleutosori black-brown; spores round or ovate, rarely conical at 

 apex, 26-35 by 20-26//, chestnut-brown, epispore rather thin, apex 

 darker and strongly thickened (5-7//), pedicel firm, up to 100// long." 



The specimens of this distribution are part of the type 

 collection. 



48. Uromyces minimus Davis. (1894. Bot. Gaz. 19:415.) 



48a. On Muhlenbergia sylvatica Torr., Ill, Somers, Wis., Davis. 



Orig. Descr. " Hypophyllous. Uredosori light brown, teleutosori 

 black, oblong or linear, soon naked. Uredospores globose or oval, light 

 brown, echinulate, 12-19// i° diameter, usually 14-16. Teleutospores 

 brown, smooth, spheroidal, oval or oblong, 14-22 X 12-19//, usually 

 17-20 X 15-17,", apex rounded, conical or occasionally truncate, very 

 strongly thickened, the apical thickening constituting nearly half the 

 length of the spore; pedicels moderately stout, tinted, once to twice the 

 length of the spore. Colorless clavate paraphyses present." 



II. Uredosori hypophyllous, light brown; uredospores 

 globose or nearly so, 12-20/x in diameter, average about i8n, 

 wall rather thin, yellowish-brown, strongly and densely 

 echinulate, pores about 4, scattered. 



III. Teleutosori hypophyllous, dark brown, linear-oblong; 

 teleutospores spheroidal, oval or oblong, 12-20 by 14-22/u,, 

 apex rounded or obtuse, very strongly thickened, even to half 

 the length of the spore, base rounded or somewhat narrowed, 

 pedicel moderately stout, firm, tinted, about once the length 

 of the spore. 



EXSIC : 

 Ellis & Everhart, N. Am. Fungi, 3240. 



Until recently this species has been known from only the 

 type locality at Somers, in Kenosha Co., Wis. It was first 

 observed in October, 1893; and in June, 1894, an undescribed 



