THE RUSTS OF NOVA SCOTIA. FRASER. 427 



Fernald, C. teneUa Schkuhr., C. canescens Va,r. disjunctq, 

 Pictou. 



These rusts are placed under this species provisionally until 

 their position is determined by cultures. Some of them may 

 belong to Puccinia Caricis-Solidaginis Arth. which has aecia 

 on Solidago species; probably some belong to P. Caricis- 

 Asteris Arth., while others may have their aecia on Ribes. 

 Culture work is necessary before many of the rusts so common 

 on the sedges can be assigned to their proper species. 



Puccinia angustata Peck. 



0. Pycnia epiphyllous, in small groups on the spots bear- 

 ing aecia. 



1. Aecia hypophyllous or caulicolous, on yellow, brown 

 or brownish-purple orbicular spots, in small dense groups on 

 the spots, in irregular, larger groups on the stem and petioles, 

 cylindrical, cup-shaped, margin recurved, incised, white. 

 Aeciospores globose or angular-globose, 16-2(V, verrucose, pale 

 yellowish. 



II. Uredinia hypophyllous, often on yellowish areas, 

 mostly arranged in lines, oblong or linear, long covered by the 

 epidermis, pulverulent, light brown. Urediniospores sub- 

 globose, ellipsoid or obovate, 18-22 by 2 6-3 1/*, wall strongly 

 but sparingly echinulate, yellowish-brown. 



III. Telia similar to the uredinia but black and rather 

 compact. Teliospores clavate or fusoid-clavate, 16-22 by 

 43-T3/*, apex truncate, rounded or acuminate, base narrowed, 

 slightly constricted at the middle; wall pale brown, much 

 thickened, up to 14w, and darker at apex, smooth ; pedicel light 

 brown, thickened, persistent, usually a little shorter than 

 spore. 



Aecia on Lycopus americanus L., L. uniflorus Michx., 

 Pictou. 



