188 BOTANICAL GAZETTE. 
‘ oe 
brown; spores subglobose, minutely echinulate, brown, 15-18 —24 fi. 
IIf. Spots same; sori roundish or oblong, epigenous and soon naked, 
cauline covered by the epidermis, blackish; spores oval, elliptical or 
oblong, strongly thickened at the apex, broadly rounded or variously pole 
dark brown, 16-18 by 24-30 1; pedicels about one and a half times the lengt 
of the spore, often broad, tinted, especially close to the spore. 
On Cnothera linifolia, Makanda, Ill., April 27, 1882. A. B. 
Seymour. ™ ; 
The ecidia occur on the cauline leaves, affecting all alike, 
but sparingly on the radical leaves; the uredo and telento forms 
are mostly confined to the radical Jeayes. The pedicels of the 
Uredospores are somewhat persistent. 
Uromyces Scrert. 
II. and Ill. Amphigenous; spots brown, indeterminate; sori long ¢ov- 
ered by the epidermis, minute and rounded or larger oblong, sometimes COD 
fluent end to end, forming clusters up to one-fourth o long, ae 
bl IT res among the teleutospores, few, irregularly elliptical, 
wn, sparsely echinulate, 15-20 by 27 t spores 
clavate-elliptical, widest at the center, mostly pointed, brown, apex darker H 
thickened, about 18 by 32-42 #; pedicels stout, subhyaline, about the length 0 
spore. 
On Scirpus fluviatilis, Champaign, Ulgabecst 13, 1881. 4: 
B, Seymour, e 
The leaves are thickly mottled with conspicuous brown spots, 
not definitely circumscribed, The appearance is nearest to that 
of U. spartine, Farl. of anything found, but is sufficiently dis: 
tinct in the appearance of the sori and the larger, differently 
_ shaped spores. 
or oblong, smooth, apex rounded or angular, thickened, 12-18 by 21-30 yi; ped- 
_icel somewhat colored, thick, searcely tapering below, once to twice the leng — 
of the spore. 
_On Panicum virgatum, McLean Co., July 20, 1881; Elymis 
Virginicus, Piatt Co., August 10,1881. A. B. Seymour. ~~ 
PUCCINIA TENUIS 7 
r ypophyllous, rarely algo epiphyllous; secidia clustered in ee 
; A sas or sparsely seatte d, very small, short, the narrow < 
regularly lacerated and recurved ; spores subglobose, very minufely tubereula™ 
1 a — tenue, Schw ! 
M. ypophyllous: spots s 
blackish center: sori witisitace 
