374 THE RUSTS OF NOVA SCOTIA. -PHASER. 



I. Aecia mostly hypophyllous, also epiphyllous and petio- 

 licolous, crowded in small groups on discoloured often 

 depressed areas, low, small; peridium lacerate. Aeciospores 

 yellow, becoming colourless, subglobose or polygonal, 16-24/A; 

 wall colourless, finely verrucose. 



II. Uredinia hypopHyllous, linear, long covered by the 

 upidermis, 1 mm. or less in length. Urediniospores globose or 

 elliptical, 16-29 by 19-24/A; wall pale brown, rather thin, finely 

 echinulate. 



III. Telia hypophyllous, small, black or dark brown, 

 mostly oval or linear, long covered by the epidermis. Telio- 

 spores variable in form, obovate, broadly clavate or oval, 16-23 

 by 23-33/ti; wall brown, smooth, scarcely thickened at the apex; 

 pedicel brown, much shorter than the spore, persistent. 



Pycnia and aecia on Ranunculus repens L., Pictou, May 

 25, 1910. 



Uredinia and telia on Poa trivialis L., Pictou, July 17, 

 1910. 



This is an European species of which neither aecial nor 

 telial stage has been previously reported from North America. 

 It was collected in only one place. The aecia were collected 

 in the spring, and in July the other stages were found to be 

 common on Poa that grew near. 



Uromyces Peckianus Farl. 

 Nigredo Peckiana (Farl.) Arth. 



0. Pycnia amphigenous, usually in small groups sur- 

 rounded by the aecia. 



1. Aecia amphigenous, on rounded spots, circulating, 

 bright orange, long cylindrical, lacerate. Aeciospores angular 

 globose or ellipsoid, about 16-22/*; wall nearly colourless, 

 medium thick, contents orange, fading to pale yellow. 



