THE RUSTS OF NOV A SCOTIA. — FRASEK. 419 



the former P. dispersa Erikss. now consists of the following 

 species : 



P. dispersa Erikss. on rve (Secale cereale). Aecia on 

 Anchusa species. 



P. triticiiUi Erikss. on wheat (Triticum), Aecia unkno"\\Ti. 



P. hromina Erikss. on brome grass (Bromus). Aecia on 

 Symphtum officinale and Pulmonaria montana. 



P. agropynna Erikss. on coach grass {Ag^ropyron repens). 

 Aecia unknown. 



P. liolcina Erikss. on HoJciis species. Aecia nnknoAvn. 



P. Triseti Erikss. on Trisetum flavescens. Aecia unknown. 



Puccinia agropyrina Erikss. 

 & I. Pycnia and aecia unknown. 



II. Uredinia mostly epiphvllous, sicattered, small or 

 medium sized, cval or oblong, rusty yellow. Urediniospores 

 globose or sub-globose, 20-2 7^, finely echinulate; wall pale 

 yellow; contents yellow. 



III. Telia mostly hypophyllous, often on the sheaths, 

 scattered or sometimes aggregated, oblong, covered by the 

 epidermis, black. Teliospores oblong or oblong-clavate, 14-21 

 by 40-54/>t, rounded or obtuse at apex, narrowed toward base, 

 not or slightly constricted at the septum, smooth, broA\Tiish; 

 pedicel short, coloured ; paraphyses present. 



On Agropyron repens L., Pictou. 



This rust is very common on its host near Pictou, 

 especially on the after-grass in hay-fields. Both the uredinial 

 and telial stages were found abundantly in Late fall. 



This specias may not be identical with the European rust 

 on Agropyron repens, but it is placed here provisionally, or 

 until infection cx]>eriments decide its position. It may be 

 P. ohliterata Arth., which has aecia on Thalictrum and 

 Aquilegia. (Arthur, Mycologia 1:250. 1909; 2:225. 1910). 



