I'arasifir f'%iin// of f/li)iois. H-K) 



the length of the si)()re. rather slender but firm, slightly tinted. 

 On Sparfiiia ci/nosKroides: McLean. "July 20, 2348, Oct. 11, 

 182U: Lake, Aug. 27, 1346: Fulton, Oct. 1. 1771. Phmgimfes 

 ronimiinix: McHenry, Aug. 26, 1325: Kane. Aug. 30, 1368. 

 Andro])0()on finr.dfiix: Rock Island, Sept. 24. 1648. A. scojxi- 

 riiis: JoDaviess, Sept. 15, 5920. 



This species was first described as Uredo Phntf/iiiitis by 

 Schumacher (Enum. Plant. Saell. TL [1803] p. 231), and his 

 description shows that his Uredo was that of this species, if, 

 indeed, he had not the teleutoforra. Hedwig next described it 

 as Piiccinia mimdhiaeeo. which description was published by 

 DeCandolle, together with one of his own, in Lam. Encyc. bot. 

 (1806) p. 250; it is thus explained why DC. is sometimes writ- 

 ten as authority for this name instead of Hedw. Schwein- 

 itz (Syn. Fung. Car. [1822] No. 487) published it under the 

 name of Puccinia arund.inaria'. 



The Illinois specimens on Phrarjinites coinmimis have te- 

 leutospores narrower and more constricted, so that the segments 

 are each nearly elliptical, while the European specimens on 

 same host (Rabh. Herb. Mycol. 282) are much like the Illinois 

 specimens on Spartina ('j/nosiiroides and on AndrojJO(/on. But 

 the spores on one Sjxfiiina plant closely resembles the Illinois 

 pltr(if/))iif('>; form. 



P. rubigo-vera, (DC.) Winter. 



II., III. Amphigenous. Uredosori mostly hypogenous. 

 linear or oblong, irregularly scattered, seldom confluent, some- 

 what elevated, soon open; teleutosori linear or oblong, scattered 

 or variously confluent, long covered by the unbroken e])idermis. 

 Idack, surrounded by a dense row of dark-brown paraphyses: 

 uredospores subglobose, epispore rather thin, minutely echinu- 

 late. 21-25 m: teleutospores cuneiform, oblong or elliptical, 

 constricted or not at the septum, but usually tapering below, 

 vertex thickened, truncate, obtusely rounded or sometimes more 

 or less pointed, epispore thin, smooth, cell contents granular, 

 12-18 by 27-54 m; pedicel short, rarely half the length of tiie 

 spore, deeply tinted. 



On irheat: Adams, .lime 26, 5294, June 29, 5344, July 6, 

 5426, II., HI.; McLean, .luly 11, 2343, July 17. 5583. 11.. III.: 

 15 



