406 THE RUSTS OF NOVA SCOTIA. FRASER 



oblong-clavate or oblong, 16-22 by 45-60/*, constricted at the 

 septum, apex rounded or acuminate; wall dark brown, much 

 thickened at the apex, 18/* or less, smooth; pedicel tinted, per- 

 sistent, shorter than or equalling the spore. 



On Cornus canadensis L., Pictou and Truro, (Prof. C. L. 

 Moore. 



Puccinia Acetosae (Schum.) Koern. 

 Puccinia Rumicis Lasch. 



0. Pjcnia not observed. 



1. Aecia not known, probably not formed. 



II. Uredinia amphigenous, mostly hypophyllous, scattered, 

 small, rounded, pulverulent ferruginous. Urediniospores 

 globose, ellipsoid or pyriform, 20-24 by 22-2 S/A, somewhat 

 spiny, brownish, 



III. Telia similar to the uredinia but oblong on the stem 

 and dark brown. Teliospores ovoid, ellipsoid, oblong or sub- 

 clavate, 19-26 by 30-46/*, rounded at both ends or slightly 

 narrowed below, somewhat constricted at the septum; wall 

 uniform, finely verrucose, chestnut-brown; pedicel hyaline 

 slender, deciduous, up to 3 5/* long. 



On Rumex Acetosella L., Pictou. 



This rust was collected in one place near Pictou and this 

 collection showed only a scanty development of urediniospores. 

 Though search was made during the summer it was not found 

 elsewhere. The rust is not conspicuous and may have been 

 overlooked. 



Puccinia Menthae Pers. 



0. Pycnia in small groups, honey-coloured, conspicuous. 



1. Aecia hypophyllous, on yellowish spots, sometimes 

 purple, circinate. Aeciospores sub-globose or polygonal 16-25/s 

 verrucose, pale yellow. 



