Parasitic Fungi of Illinois. 191 
Lean, July 20, 2494, IL., 5604, IL, Aug. 1, 2493, IL, Aug. 6, 
2495, IL., Oct. 18, 1876, IT., Oct. 19, 1895, IT., Stephenson, Sept. 
21, 6065, IT., III. * 
The xcidium form is not usually present, but occurs on 
the same host with IT. and III., both of which are abundant. 
The American form differs from the European in having 
the teleutospores echinulate, and has been called var. Amevi- 
cana. On Blephilia hirsuta the parasite is plainly different 
from the type. The sori more frequently have a circular ar- 
rangement around one evidently older, the epidermis is later 
rupturing, and afterwards is less apparent as a border; the 
spores are much lighter colored, and the epispore is thinner. 
This is the uredoform. The teleutospores seem to be rarely 
developed. 
P. glechomatis, DC. 
III. Hypogenous; spots small, distinct, at first light yel- 
low, soon becoming blackish and breaking out, leaving more or 
less circular holes; sori usually closely clustered, often some- 
what circinating, rarely scattered, ferruginous brown; spores 
subelliptical, very variable, sometimes obtusely rounded, but 
often conspicuously pointed above or below, oblong-elliptical, 
light-colored, 18 by 31 4; pedicel hyaline, fragile, nearly as 
long as the spore. 
P. hyssopi, Schw. Spots lutescent, effuse; sori aggregated, compact, 
tawny, somewhat circinate and undulately confluent, at first blackish, 
small, but occurring copiously on the leaves. Spores tawny, becoming 
loose.—Schweinitz, N. Am. Fungi, No. 2944, p. 296. 
On leaves of Lophanthus nepetoides: Kane, Aug. 30, 1370, 
1383; Lee, Sept. 8, 5721; Stephenson, Sept. 13, 5829. 
This is P. glechome, DC. (FI. Fr., VI. p. 55), and P. hys- 
sopi, Schw. 
P. plumbaria, Peck. 
III. Amphigenous. Sori scattered on stems and leaves, 
small or large, sometimes confluent, covered until late with the 
more or less fissured and peculiar lead-colored epidermis, when 
naked dark reddish brown, powdery; spores irregular, broad, 
