154 PROCEEDINGS OF THE ACADEMY OF [1893. 



Teleutospores clavate, 40-50 x 1 8-20/;., constricted at the septum, 

 supper cell broader and darker, lower cell, attenuated below and 

 paler (subhyaline), epispore smooth, strongly thickened at the 

 rounded or subacute apex. Pedicels as long as or a little longer 

 .than the spores. 



Very distinct from P. cenotherce Vize. 



Tuccinia virgata E. & E. 



On dead leaves of Panicum virgatum, Rockport, Kansas. March, 

 1892. (E. Bartholomew, No. 496.) 



III. Sori amphigenous but more fully developed on the lower side 

 of the leaf, linear, often 1 cm. or more long, erumpent and margined 

 laterally by the ruptured epidermis, dark chestnut-brown, almost 

 black. Teleutospores mostly wedge-shaped or clavate but also, some 

 of them oblong, 40-70 x 18-22,a, the upper cell shorter and elliptical 

 or subglobose and dark, the lower cell longer, narrower and lighter 

 colored, apex rounded and obtuse or subtruncate, and sometimes a 

 little roughened. Epispore thickened at the apex but without any 

 distinct papilla. 



Has a general resemblance to P. gramims but the spores are 

 different. 



Puccinia lygodesmiae E. & E. 



(P. variolans Hark ? var. caulicola in Ell. and Ev., N. A. F. 

 2,237.) 



(I.) ? and III. On stems of Lygodesmia juncea, Cheyenne Wells, 

 Colorado. July, 1887. (C. H. Demetrio.) 



III. Sori about £ or I mm. diam., densely cespitose in elongated 

 patches partly or entirely surrounding the stems, and sometimes 

 covered by the whitened cuticle, but finally bare and dark chestnut 

 color. Teleutospores oblong-elliptical, constricted at the septum, 

 mostly rounded at each end, epispore smooth, thickened at the apex 

 and often with a broad, sometimes oblique papilla, 35-45 x 20-23/;., 

 on stout, persistent pedicels, 100-120,u long. The mode of growth is 

 similar to that of P. enormis Fckl., the stems being more or less 

 swollen where occupied by the clusters of sori. 



This is very distinct from P. harknessii Vize (on Lygodesmia 

 spinosa) but closely allied to P. variolans Harkness, from which, 

 however, it differs in habit and in the epispore being much thinner 

 in the middle of the spore. 



An JEcidium which may belong here, was found on the same host 

 in Montana, by Mr. Anderson. The secidia arising from yellow 



