422 THE RUSTS OF NOVA SCOTIA. FRASEH. 



The connection of the aecial stage was shown by cultures 

 in 1904 by Arthur. (Jour. Myc. 11:62. 1905). He con- 

 firmed these results by later cultures. 



Puccinia perminuta Arth. 

 & I. Pycnia and aecia unknown. 



II. Uredinia not collected. 



III. Telia mostly hypophyllous, rounded, oval or chiefly 

 linear, dark brown, remaining covered by the epidermis. 

 Teliospores variable, usually oblong, truncate or rounded at 

 the apex, sometimes narrowed toward the base, 10-16 by 30- 

 50;*; wall brown, rather thin except at the apex, there much 

 thickened, 10/* or less ; pedicel very short. 



On Agrostis alba L., Pictou, August, 1910. 



Only telia were present in the collections of this rust, and 

 no description of the uredinia is at hand. The determination 

 was made by F. D. Kern. 



Puccinia obscura Schroet. 

 & I. Pycnia and aecia on Bellis p&rennis L. (Europe). 



II. Uredinia amphigenous, mostly hypophyllous, on 

 irregular yellowish spots, scattered or irregularly distributed, 

 elliptical or oblong, covered for some time by the epidermis, 

 at length naked, pulverulent, yellowish-brown. Urediniospores 

 sub globose, ellipsoid or obovate, 20-25 by 27-35/*; wall rather 

 thick, brown, strongly but sparingly echinulate. 



III. Telia similar to the uredinia but more compact. 

 Teliospores oblong or clavate, 16-20 by 30-48/t, rounded above, 

 sometimes rather acute, base narrowed, constricted at the 

 septum, cells separating easily; wall pale yellowish-brown, 

 somewhat thickened at the apex, about 3-5/u, smooth; pedicel 

 mostly hyaline, usually shorter than the spore. 



