4)24 THE RUSTS OF XOVA SCOTIA. FllASEK. 



Puccinia Sambuci Aitli. 



0. Pycuia amphigenous, mostly epiphyllous, in smalt 

 groups on the aecia bearing spots, honey-yellow. 



1. Aecia hypophyllous, on rounded yellow, often bullato 

 spots, in circular groups of different sizes, irregular shaped 

 on tb« nerves, margin recurved, incised. Aeciospores angular- 

 globose, about 16-19)"., finely verrucose, yellowish. 



II. Uredinia hypophyllous, rounded, elliptical or linearj 

 surrounded by the ruptured epidermis, pulverulent, cinnamon. 

 Urediniospores sub-globose or obovate, about 22^ in diameter, 

 echinulate, yellowish-brown. 



III. Telia hypophyllous, rounded or oblong, scattered or 

 gregarious and confluent, surrounded by the ruptured epider- 

 mis, pnlvinate, blackish-brown. Teliospores oblong-clavate, 

 18-24 by 38-52/11, rounded or "obtuse above, narrowed below, con- 

 stricted at the septum ; wall light brown, much thickened above, 

 o-lOfi, smooth; pedicel i>ersistent, hyaline, usually shorter than 

 spore. 



Pycnia and aecia on Samhucus canadensis L., Pictou. 



Uredinia and telia on Carex lurida Wahlenb., Pictou. 



The aecial stage was common on its host near Pictou. Only 

 one collection of the rust on Carex lurida was made. It differs 

 somewhat from Sydow's description. The teliospores are 

 smaller and the pedicels shorter, but it is placed here pro- 

 visionally. It may be that some other common Carex rusts 

 belong to this species 



Puccinia Opizil Bubak. 

 0. Pycnia numerous, on the spots with the aecia, dark 

 honey-yellow. 



T. Aecia hvpophyllous or culmicolous on ]uirplish or 

 reddish circular spots surrounded by a more or less extensive 

 yellowish zone, spots ^- to H cm. in diameter, in groups occupy- 



