Parasitic Fungi of Illinois. 199 
the length of the spore, rather slender but firm, slightly tinted. 
On Spartina cynosuroides: McLean, J uly 20, 2348, Oct. 11, 
1829; Lake, Aug. 27, 1346; Fulton, Oct. 1, 1771. Phragmites 
communis: McHenry, Aug. 26, 1325; Kane, Aug. 30, 1368. 
Andropogon furcatus: Rock Island, Sept. 24, 1648. A. scopa- 
rius: JoDaviess, Sept. 15, 5920. 
This species was first described as Uredo Phragmitis by 
Schumacher (Enum. Plant. Saell. II. [1803] p. 281), and his 
description shows that his Uredo was that of this species, if, 
indeed, he had not the teleutoform. Hedwig next described it 
as Puccinia arundinacea, which description was published by 
DeCandolle, together with one of his own, in Lam. Encye. 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 arundinarie. 
The Illinois specimens on Phragmites communis 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 cynosuroides and on Andropogon. But 
the spores on one Spartina plant closely resembles the Illinois 
phragmites form. 
P. rubigo-vera, (DC.) Winter. 
II., TI. 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 epidermis, 
black, surrounded by a dense row of dark-brown paraphyses; 
uredospores subglobose, epispore rather thin, minutely echinu- 
' late, 21-25 »; 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 ; pedicel short, rarely half the length of the 
spore, deeply tinted. 
On wheat: Adams, June 26, 5294, June 29, 5844, July 6, 
5426, IT., III.; McLean, July 11, 2348, July 17, 5583, IL, IIT.; 
15 
