THE RUSTS OF NOVA SCOTIA.- FRASER. 378 



I. - Aecia hypophyllous, often circinate; peridium pale, 

 low, cylindrical, margin revolute, lacerate. Aeciospores 

 globoid, about 15-16/u; wall colourless. 



IT. Uredinia hypophyllous, small, oval, up to -J mm. in 

 length, ruptured epidermis evident, ferruginous, pulverulent. 

 Urediniospores oval or obovate, 13-18 by 19-25/*; wall medium 

 thick, pale brown, finely echinulate, two equatorial germ pores. 



III. Telia hypophyllous, oblong or linear, pulvinate, 

 firm, soon naked, dark chestnut-brown or black. Teliospores 

 obovate, rounded or obtuse above, narrowed Mow, 14-22 by 

 24-35ft; wall smooth, thin, light brown, much thickened at 

 the apex, 6-1 2/x; pedicel slender, tinted, as long as the spore or 

 longer. 



Aecia on Solidago bicolor L. and other species of Solidago, 

 Pictou and vicinity. 



Telia and uredinia on Car ex deflexa Hornem., C. flava L. ? 

 C. intumescens Rudge. 0. novae-angliae Schwein., 0. tribu- 

 loides Wahlenb. and Var. reducta Bailey, 0. scoparia Schkuhr., 

 Pictou and surrounding districts. 



This species also has aecia on Aster. (See Arthur, 

 Mycologia 4:21. 1912). 



The writer by cultures (Mycologia 4:18.1. 1912) showed 

 that this rust has aecia on Solidago species. Arthur had pre- 

 viously established this connection. 



It seems probable that there is only one species of 

 Uromyces rust on the sedges in this vicinity, that is, all belong 

 to this species. It is very common on Car ex scoparia. 



Uromyces Poae Hab. 

 Nigredo Poae (Rab.) Arth. 



0. Pycnia amphigenous, mostly crowded on spots bearing 

 aeci a . hoi 1 ey-yellow. 



