THE RUSTS OF NOVA SCOTIA. — FRASER. 405 



On Iris versicolor- L., Pietou. 



The telial stage was not found although careful search was 

 made for ii in late autumn and early winter. 



Sydow states that in some places only the urediniospores 

 have been found; in other places teliospores and urediniospores 

 may occur together, while in other places the teliospores are 

 found only very late in the season. 



Puccinia mesomegala B. & C, 



0. Pycnia not observed. 



I & II. Pycnia and aecia probably not formed. 



III. Telia amphigenous, arranged in rows on pallid, 

 circular or oval spots, about 5-8 mm. in diameter, spots some- 

 times coalescing, distinct, oval or circular, 150-320 by 150- 

 450^1 ; ruptured epidermis conspicuous, ferruginous, pulver- 

 ulent. Teliospores oval or oblong, rounded or pointed above, 

 rounded or narrowed at the base, not or little constricted at the 

 septum, 13-24 by 2Y-41iu.; wall uniformly thin, light brown, 

 sometimes with a small hyaline papilla at the apex and the 

 side of the lower cell at the opening of the germ pore ; pedicel 

 hyaline, delicate, deciduous, equalling or shorter than the 

 spore. 



On Clintonia horealis (Ait.) Raf., Pietou, June 15, 1910. 



Puccinia mesomegala was collected only in one place near 



Pietou. It is probably not common, as it is rather conspicuous. 



Puccinia acuminata Peck. 

 Puccinia porphyrogcniia Curt. 

 0. Pycnia not observed. 

 I & IT. Aecia and uredinia probably not formed. 



TIL Telia hypophyllous, on brown or purpli^^h ofton 

 depressed spots, scattered, 1-3 mm. in diameter, surrounded by 

 the ruptured epidermis, compact, black. Teliospores clavate. 



