662 Arthur : New Species of Uredineae 



tive species, easily recognized. No collection of the aecidial form 

 in its prime has yet been made and the description is necessarily 

 based upon aecidial remains accompanying well developed teleuto- 

 spores. Since the name of the species was suggested by the writer, 

 it has appeared twice in botanical publications : in Shear's Ellis 

 and Everharfs Fungi Colambiani continued, No. 1463, accom- 

 panying exsiccati, and in Botanical Survey of Nebraska, No. 5:23, 

 in both cases as nomina nuda. The specific name is bestowed in 

 recognition of the valuable services to uredinology, especially in 

 observations upon the Nebraska rust flora, rendered by the dis- 

 coverer of the species, Rev. J. M. Bates. 



Puccinia epicampus sp. nov. 



Sori amphigenous, largely sunken between the veins, oblong 

 or linear. 



II. Sori brownish-yellow, soon naked, ruptured epidermis 

 prominent; uredospores oblong or nearly globose, 22-24x26- 

 30 /Jt ; wall rather thick, colored, obscurely echinulate or papillose ; 

 pores four, equatorial. 



III. Sori dark brown, soon naked ; teleutospores oblong or 

 elliptical, slightly or not at all constricted, rounded at apex and 

 base, 22-26 x 3 0-40 p; wall thick, thicker at apex; pedicel firm, 

 hyaline, tinted at base, once to thrice length of the spore. 



On leaves oi Epic amp es ringens Benth., Hot Springs, N. Mex., 

 Sept 13, 1896. E. W. D. Holway. 



Puccinia xylorrhizae sp. nov. 



O. Spermogonia amphigenous nearly colorless, small, sunken 



in the substratum. 



III. Teleutosori amphigenous, circinating about a sm 



all 



1 »-% 



roughened area, nearly black, opening progressively from the cen- 

 ter outwardly, soon naked ; teleutospores oblong or narrowly ob- 

 long, slightly narrowed at both ends, very little constricted at the 

 septum, 21-26 by 43-50 /i, apex subacute or obtuse, much thick- 

 ened, pedicel thick, firm, somewhat tinted, usually about as long 

 as the spore. 



On leaves and stems of Xylorrhiza glabriuscula, Laramie Plains, 

 Wyoming, June 27, 1897 {Aven Nelson), and Coopers Lake, Wy- 

 oming, June 17, 190 1 {Leslie Goodding, no. 19), the latter being 

 the type. 



