Parasitic Fungi_of Illinois. 163 
U. spermacoces,’ (Schw.) Curt. 
IL., IIT. Amphigenous, on stems and leaves; spots, none 
observed; sori numerous, scattered, very prominent, rounded, 
black, surrounded by the upturned epidermis. II. Spores 
subglobose, yellowish, very minutely warty, 21-25 by 22-27 u. 
III. Spores subglobose, smooth, uniformly very dark colored, 
24-27 by 30 »; pedicels persistent, about 3-4 times the length 
of the spore. 
On stems and leaves of Diodia teres:,Union, Oct. 25, 1994, 
Oct. 29, 2122, Nov. 1, 2199. The uredo form was collected in 
Union Co., Aug. 1880, by C. W. Butler. 
U. Rudbeckiss, Arth. & Hol. (in lit. ). 
Hypophyllous; spots pale, then brown or black, numer- 
ous, scattered; sori small, densely clustered, somewhat circinat- 
ing, slightly raised, clusters plane, epidermis at length vanish- 
ing with no remains around the cinnamon-colored sori; spores 
oblong-obovate, obtuse or obtusely pointed, pallid, about 12 by 
20 »; pedicel slender, hyaline, somewhat longer than the spore. 
On Rudbeckia laciniata: McHenry, Aug. 24, 1278; Ste- 
phenson, Sept. 21, 6084. 
The spots resemble some forms of Puccinia asteris, the 
leaf soon breaking away, leaving holes as if eaten by an insect. 
U. Howei, Peck. 
III. Spots none; sori hypogenous, scattered, indefinitely 
clustered, often confluent, surrounded by the remains of the 
ruptured epidermis, blackish purple; spores oval or subglobose, 
warty, 18-21 by 21-25 »; pedicels about twice the length of 
the spore, very fragile, breaking off, leaving a small portion at- 
tached to the spore, which therefore appears to be very short- 
pediceled. 
Hyrogenous, sori scattered or subconfluent, surrounded by the 
ruptured epidermis, from one-half to one line in diameter; spores 
brown, subglobose, roughened with slight indentations (?), .00083 to 
0010 in. in diaméter.—Peck, 23d Rpt. N. Y. State Museum [1873], p. 58. 
On leaves of Asclepias cornuti: Champaign, Aug. 11, 1016; 
Cook, Sept. 8, 2851; Lee, Sept. 9, 5755; Stephenson, Sept. 13, 
