37 f! THE RU8TS t)l NOVA SCOTIA — FBASER. 



and that the Puccinui hr^s in course of time developed from 

 the Uromyces. The nrediniospores are also alike and a few 

 iriesospores are present in the Uromyces, which would tend to 

 strengthen the supposition. 



Uromyces Spartinae Far!. 



Uromyces acummatus Arth. 

 Nigredo Polemonii (Peck.) Arth. 



0. Pycnia chiefly epiphyllons, greiujarioiis. in small groups, 

 not con.spicuous, punctiform, honey -yellow, hoconiing brownish. 



1. Aecia chiefly hypophyllous, gregarious, more or less 

 crowded in groups on slightly discoloured spots, cupulate or 

 cylindrical, margin lacerate, slightly recurved. Ae(;iospores 

 subglohoid, 15-24 l)y 18-27/*; wail (•(•lonrless, rather thin, 

 evenly and finely verrucose. 



II, TJredinia ei)ipliyllous, intercostal, linear, soon naked. 

 ruptured epidermis evident, yellowish-brown, not incon- 

 spicuous. Urediniospores globose or l)roadly elliptical, large, 

 22-32m in diameter, a few 25 by 35/*; wall thick when 

 immature, becoming thinner, yellowish, rather sparsely 

 echinulate, pores large, scattered. 



III. Telia similar to the uredinia ))nl blackish-lnown and 

 more c(mspic'uous; teliospores obovate or oblong-clavate, 15-22 

 by 22-42/1; wall dark brown, ay)ex darker and thickened, 0-10/^-, 

 usually rounded or acuminate above, base narrowed ; pedicel 

 slightly coloured, firm, usually longer than the s|)Mre, often twice 

 its length. 



Pycnia and aecia on Arc.naria Jti(cr/li)ra L.. SpetfjitJarm 

 canadensis (Pers.) Don.. Pictou. 



Uredinia and telia on Spartina patens (Ait.) Mnhl., tS. 

 glabra Var. aUernifoKn TLoisel) VTri'r.. S. Mir.hdnxiann 

 Hitchc.. Pictou. 



