THE RUSTS OF NOVA SCOTIA. — FRASER. 409 



Puccinia Violae (Schum.) DC. 



0. Pycnia mostly epiphyllous, honey-yellow. 



1. Aecia amphigenous, often deforming the petioles and 

 leaves, in irregular clusters, low, margin recurved, lacerate. 

 Aeciospores mostly sub-globose, 16-21 by 21-26ju., mostly 

 20-21/* in diameter, orange-yellow, fading to colourless, finely 

 verrucose. 



II. Uredinia hypophyllous or petiolicolous, scattered, 

 small, rounded or elongate on the petiole, soon naked, 

 pulverulent, cinnamon-brown. Urediniospores globose, sub- 

 globose or ellipsoid, 18-22 by 20-28/*, dark brown, echinulate. 



III. Telia hypophyllous or petiolicolous, often on 

 yellowish spots, aggregated or scattered, small, rounded elongate 

 on the petiole, pulverulent, dark brown or black. Teliospores 

 ellipsoid or oblong-ellipsoid, 20-27 by 30-38/*, rounded at both 

 ends, base sometimes narrowed, slightly or not constricted at 

 the septum ; wall chestnut-brown, somewhat thickened at the 

 apex with a lighter papilla, usually smooth; pedicel deciduous. 



On Viola cucullata Ait. and other Viola species, Pictou, 

 French River. 



The violet rust is very common in this vicinity. 



Arthur and Holway (Minn. Bot. Studies 11, Part 5:631- 

 641, 1901) in a paper on the violet rusts of North America 

 state that this rust is common in its three forms, aecia, telia 

 and uredinia, throughout ISTorth America on nearly all the 

 indigenous species of the genus Viola. 



Puccinia PoIygoni=amphibii Pers. 

 Puccinia Amphihii Fuck. 

 P. Polygon I Alb. and Schw. 

 & I. On Geranium maculatum L. 



II. Uredinia amphigenous, mostly hypophyllous, scattered 

 or in circular groups, rounded, soon naked, pulverulent, yellow- 



