404 THE RUSTS OF NOVA SCOTIA. FRASER. 



Puccinia Circaeae Pers. 



0. Pycnia not observed. 



I & II. Aecia and uredinia not formed. 



III. Telia hypophyllous, on definite yellowish-brown or 

 purple spots, about 2-3 mm. in diameter, small and crowded, 

 pulvinate, at first yellowish, at length dark brown. Teliospores 

 fusiform or oblong, 10-14 by 25-40/*, usually conical above and 

 narrowed toward the base, slightly constricted at the septum; 

 wall yellowish or light brown, much thickened at the apex, up 

 to 8/x, smooth; pedicel hyaline, usually longer than the spore. 



On leaves of Circaea alpina L., C. lutetiana L., Pictou. 



Owing to the yellow or purple spots on the leaves, this rust 

 is conspicuous. It is common in the districts about Pictou. 



The telia formed late in the season differ from the earlier 

 in being large and more elongated. The teliospores are similar 

 in form, but the earlier are lighter in colour and germinate at 

 once. The later are darker and germinate after wintering. 

 Telia are formed also on the stem but my collections do not 

 show this. 



Puccinia Iridis (DC.) Wallr. 



Uromyces Iridis DC. 



0. Pycnia not observed. 



1. Aecia not known, probably not formed. 



II. Uredinia amphigenous, scattered, rounded or linear, 

 long covered by the epidermis, at length naked, pulverulent, 

 rusty-brown. Urediniospores globose, sub-globose, ellipsoid or 

 ovate, 20-27 by 24-35^; wall thick, yellowish-brown, 

 echinulate. 



III. Telia hypophyllous, scattered, linear, sometimes con- 

 fluent, soon naked, black. Teliospores clavate or oblong, 14-22 

 by 30-52/A, rounded acuminate or truncate above, usually 

 narrowed below, slightly constricted at the septum ; wall light 

 fuscous, darker and much thickened at the apex, up to 14/*, 

 smooth ; pedicel brownish, persistent, shorter than the spore. 



