REPORT OF THE BoraNISt. 121 
33. P. oprecta Peck. Hidden Brand. 
Cauline; sori unequal, often very large, angular or orbicular, 
scattered or confluent, slightly elevated, long covered by the 
epidermis, black; spores oblong or oblong-clavate, sometimes 
curved, constricted, obtuse or obtusely pointed, .0018~.0024 long, 
0008’ broad ; peduncle colored, seldom half as long as the spore. 
Stems of the lake rush, Scirpus validus. Watkins and Monte- 
zuma marshes. September. - Also on Scirpus pungens. Albany. 
October. 
The green stems of the rush are often mottled by discolored 
spots, a sterile or imperfect state of this fungus, but I have found 
fertile specimens on very old dead stems only. 
384. P. coronata Cd. Crowned Brand. Mildew. 
Amphigenous ; spots pallid or yellowish; sori narrow, oblong or 
linear, crowded, long covered by the epidermis, then surrounded 
by its ruptured remains, black; spores oblong, not constricted, 
mostly tapering toward the base, truncate at the apex and crowned 
with a few prominent blunt tooth-like processes, .0016~.0022° 
long, .0006’ broad ; peduncle colored, very short. 
Leaves of grasses and cereals. Common. August and Septem- 
ber. 
This species is well marked by the apical crown of teeth, 
35. P. uinearis Peck. Linear Grass Brand. 
Amphigenous ; sori very narrow, deeply seated, oblong or linear, 
parallel, crowded, long covered by the epidermis, black ; spores 
oblong, slightly tapering toward the base, not constricted, very 
obtuse or truncate, .0018—.0024 long, .0006° broad; peduncle 
colored, very short. . 
Leaves and sheaths of grasses. Watkins. September. 
This is closely related to the preceding species but is without 
the apical teeth of the spore. 
36. P. craminis Pers. Grass Brand. Corn Mildew. 
Amphigenous; sori oblong or linear, crowded or confluent, often 
parallel, surrounded by the ruptured epidermis, black; spores 
obovate oblong or oblong-clavate, slightly constricted, generally 
obtusely pointed, sometimes obtuse, .0016~.0024 long, .0006: 
broad ; peduncle colored, one-half to wholly as long as the spore. 
Leaves and sheaths of grasses and cereals. Very common and 
variable. Autumn and spring. 
Probably this Puccinia is more injurious to the interests of the 
farmer than any other. Its Uredo form is the Uredo Rubigo of 
16 
