THE HUNTS OF NOVA SCOTIA. FRASEK. 'Ml 



This s|K«ies is composed of distinct races. Lu this vicinity 

 rhe form on 8. patcm^ infects Spergularia, that on >S^. Michaux- 

 iana and S. glahm nlteniifora infects Arenaria. This has 

 been shown by cultures of the writer. (Mjcologia 4:180. 

 1912). In the interior of I^orth America the form on S. 

 Michauxiana infects Folemonium and another form on the 

 same host infects Steironema, This has been shown by cultural 

 experiments by Arthur (Jour. Mycol. 12:24. 1906). 



Uromyces Silphii (Svd. ) Arth. 

 Uroitiyces Junci-tenuis Syd. 

 Xigredo Silphii (Desmaz. j Arth. 



0. Pycnia chiefly epiphyllous, in small groups, golden- 

 In-own. 



1. Aecia amphigenous. in groups 4-10 mm. across, 

 crowded about the pycnia on discoloured spots; peridium 

 colourless, margin recurved, lacerate. Aeciospores angularly 

 globoid, small, 13-18^; wall colourless, thin, minutely 

 verrucose. 



II. Uredinia amphigeuous, scattered, roundish or some- 

 what elongated, small, tardily naked, dark cinnamon-brown, 

 ruptured epidermis not conspicuous. ITrediniospores broadly 

 ellipsoid or sometimes obovate, 13-19 by 15-23/i; wall golden 

 yellow, sparsely and bluntly echinulate, pores 5 or 6, scattered. 



HI. Telia amphigenous, scattered, roim.dish or somewhat 

 elongated, small, tardily naked, firm, somewhat pulvinate, 

 blackish-brown, ruptured epidermis noticeable. Teliospores 

 angularly obovate, rounded, truncate or occasionally ]K)inted 

 above, usually narrowed below, 12-19 by 26-35/tt; wall chestnut- 

 browni, much thickened above, 7-10/x, smooth; pedicel light- 

 chestnut brown, one to one and a half times the length of the 

 spore. 



