204 Illinois State Laboratory of Natural History. 
20, 1165, ID., IIL, Aug. 23, 1239, IT., IT.; Lake, Aug. 27, 1349; 
Lee, Sept. 8, 5720, II., III.; JoDaviess, Sept. 16, 5958, IL., TIL.; 
LaSalle, Sept. 28, 6216, IT., III.; Fulton, Oct. 1, 1765. 
This is Puccinia Sorghi, Schw. (N. A. Fungi [1834], 
p. 295). The above name was published in 1815 (see Rabh. 
Krypt. Fl. I. p. 181). 
PHRAGMIDIUM, Linx. 
Teleutospores divided by two or more horizontal septa, 
producing three or more cells in a single vertical row; telento- 
sori prominent, usually smail, tufted, sometimes confluent in 
patches; uredospores one-celled, borne on deciduous pedicels; 
zcidiospores produced in vertical chains as in the true Atcidia, 
but without pseudoperidinm; uredosori and ecidiosori sur- 
rounded by a thick row of club shaped, or more or less capitate, 
incurved paraphyses. 
All the sporeforms of the Phragmidiu are ordinarily hypo- 
phyllous, the ecidium and uredo appearing rather early in 
summer, and the teleutoform after the first of July; but the 
two latter are very commonly found together during the later 
parts of the season. Sometimes the fungi are seated upon the 
petioles and stems of the host. All grow upon species of 
Rosacew, and so far as discovered, upon plants of the genera 
Potentilla, Rubus and Rosa. 
The ecidium has only recently been distinguished from 
the uredo, the sori of the two stages being mostly very similar, 
and determined by the manner of the production of the spores, 
as just indicated. It is somewhat remarkable that in the 
ecidium stage there is no peridium, hence, according to the 
characteristics adopted in this paper, the genus form is Coma, 
not Uredo or Heidium. 
Ph. fragarie, (DC.) Rossm. 
IL., III. Hypogenous. Uredosori small, cireular, without 
paraphyses, scattered; uredospore elliptical or obovate. echinu- 
late. each borne upon a pedicel, 14-16 hy 16-21 »; telentosori 
scattered, rather large, circular, prominent, powdery, chestnut- 
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