11)(^ IJlhtois State Lahoratory of Natural llistorij. 



ir., Iir., Oct. 11), 181)B, TL, III.; McHenry, Aiij?. 20, 1158, Aug. 

 28, 1252, Aug. 2(), 1827, 1828; Kaue, Aug. 80, 1869, TL, III.; 

 JoDaviess, Sept. 15, 5921, XL, III., Sept. US, 5956, TL, ITL: 

 Ogle, Sept. 22, (ill5, TL, TIL; Rock Lsland, Sept. 24, 1646, 

 Sept. 27, 1676, 1680; Fulton, Oct. 8, 1733. DuUchium spatha- 

 ceum: McHenry, Aug. 25, 1811; Cook, Sept. 5, 1438, Sept. 8, 

 1467, TL, TIL ~ 



Uredo Caricis, Schura. (Enuui. Plant. Saell. TL [1803], 

 p. 231), Pxccinia caricis, Rebent. Fl. Neora. [1804], P. cari- 

 rlna, DC. (Fl. Franc. VL [1815], p. 60). • 



On iJuHchiiiiii sjxitJ/acnnn the uredos})ores are smaller and 

 often elliptical to oblong, 12-15 by 15-21 i^-; the teleiitospores 

 are variable, more often truncate. 



P. obtecta, Peck. 



IT., ITT. 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 raggedl}^ torn: uredospores elliptical or obovate-oblong, wall 

 rather thick, minutely echinulate, pedicel rather persistent, 

 15-20 by 21-80 ^; 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-()0 i^^: pedicel short, not usually more than half 

 the length of the spore, deeply tinted. 



On Scii-2)us vaUdits: McLean, July; Fulton, coll. J. Wolf. 



P. angustata, Peck. 



IT., TIL 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 n: 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 jit; 

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

 spore. 



