196 Illinois State Laboratory of Natural History. 



II., III., Oct. 19, 1893, II., III.; McHenry, Aug. 20, 1158, Aug. 

 23, 1252, Aug. 26, 1327, 1328; Kane, Aug. 30, 1369, II., III.; 

 JoDaviess, Sept. 15, 5921, II., III., Sept. 16, 5956, II, III.: 

 Ogle, Sept. 22, 6115, II, III.; Rock Island, Sept. 24, 1646, 

 Sept. 27, 1676, 1680; Fulton, Oct. 3, 1733. Dulichium spatha- 

 ceum: McHenry, Aug. 25, 1311; Cook, Sept. 5, 1438, Sept. 8, 

 1467, II.,' III. 



Uredo Caricis, Schura. (Enuin. Plant. Saell. II. [1803], 

 p. 231), Puccinia caricis, Rebent. Fl. Neom. [1804], P. cari- 

 cina, DC. (Fl. Franc. VI. [1815], p. 60). 



On Dulichium spathaceum the uredospores are smaller and 

 often elliptical to oblong, 12-15 by 15-21 /*; the teleutospores 

 are variable, more often truncate. 



P. obtecta, Peck. 



II, III. Amphigenous. Sori scattered or irregularly clus- 

 tered, often crowded, oblong or more or less circular, long cov- 

 ered by the epidermis, which at length becomes simply cracked 

 or raggedly torn; uredospores elliptical or obovate-oblong, wall 

 rather thick, minutely echinulate, pedicel rather persistent, 

 1 5-20 by 21-30 /* ; teleutospores elliptical, somewhat constrict- 

 ed, apex thickened, obtusely rounded or variously produced and 

 pointed, usually narrowed below, often without septum, smooth, 

 18-20 by 45-60 V; pedicel short, not usually more than half 

 the length of the spore, deeply tinted. 



On Scirpus validus: McLean, July; Fulton, coll. J. Wolf. 



P. angustata, Peck. 



II, III. Hypogenous. Sori oblong or linear, often arranged 

 in long parallel rows or confluent in long lines, blackish, the 

 remains of the ruptured epidermis persistent; uredospores sub- 

 globose to elliptical, thin walled, sharply echinulate, 16-21 by 

 21-30 /*; teleutospores narrow, clavate or elongate-parallel, 

 somewhat constricted, apex much thickened, often beak-like, 

 narrowed below to and with the pedicel, 15-21 by 45-60 ^; 

 pedicel colored, less than one half to once the length of the 

 spore. 



