283 
tered in patches 2-4 mm. across, sometimes subcircinately ar- 
ranged, orbicular, black, seated on pale yellowish spots; teleu- 
tospores oblong or oblong-elliptical, broadly constricted, unisep- 
tate in the middle, the lower cell paler and rounded below; upper 
cell mostly broader and darker, contents granular; epispore 
smooth, thickened above, with or without a papilla, 38-60 15— 
214 (mostly 40-50X 18-20) ; yellowish-brown, on pedicels mostly a 
little longer than the spores, persistent and yellowish above. 
Differs from P. doloris Speg., in its amphigenous growth, black 
sori and rather larger spores. 
PucciniaA DutuisE Ell. &. Tracy. 
II., II. Amphigenous; sori small, oval, black, distinct ; uredo- 
spores subglobose, epispore thin, slightly echinulate, 30-40 by 
35; teleutospores broadly oval, slightly constricted, ends rounded, 
not thickened, smooth, dark brown when mature, 40-45 by 26-30; 
pedicel with a distinct enlargement at the base of the spore, taper- 
ing below, tinted, twice or thrice the length of the spore. 
On Andropogon intermedius and A, pertusus, India. Com. by. J. 
F. Duthie, 
PucciniA NuTTALui E. & E. 
On living leaves, petioles and flowers of Cyrtorhyncha Nuttallit. 
Foothills of the Rocky Mountains, Colorado, June, 1895. (J. H. 
Cowen), comm. Prof. C. S. Crandall. 
III. Sori at first covered by the lead-colored epidermis, soon 
naked, pulverulent and then nearly black; on the leaves thin and 
small, confluent and flat ; on the petioles, elongated, sub-linear ; 
spores elliptical, varying to oblong or obovate-elliptical, rounded 
at the ends, and mostly crowned with a small flat papilla, epi- 
spore thick but not distinctly thicker at the apex, nearly even at 
first, but in the mature spore coarsely but not prominently tuber- 
cular-roughened, yellowish-brown becoming dark-brown, 25-40x 
18-20. 
Closely allied to P. Ranunculi (Seymour) and to P. gbberulosa 
Schrtr., but the habit and roughening of the epispore is different. 
PuccINIA IRREGULARIS Ell. & Tracy. 
On Solidago sp, Pike’s Peak, Colo. (Tracy); on Solidago spec- 
tabilis var. rigidiuscula, Nebraska (Bates). 
III. Amphigenous but more abundant below; sori small, 
subhemispherical, clustered or subcircinate on small pallid spots ; 
teleutospores elliptical or oblong-elliptical, constricted, 50-70% 
20-30, epispore smooth, pale brown, strongly thickened at the 
