473 
HELMINTHOSPORIUM ToMATO Ell. & Barthol. 
On decaying fruit of tomato, Rooks Co., Kansas, September, 
1897. (. Bartholomew, no. 2433.) 
Forming definite round black patches 1%-2 cm. diam., 
scarcely distinguishable externally from Macrosporium tomato Cke. ; 
fertile hyphae erect, olive-brown, septate, geniculate and crooked, 
often with 1-2 short, rudimentary, hyaline branches ( rudimentary 
conidia )? at their tips, 40-60X 34-4 p, arising, in part at least, 
from prostrate creeping threads; conidia oblong, brown, 1—3-sep- 
tate, not constricted, obtuse at the ends, mostly a little curved, 
15-27 X8-13 py. 
The well developed erect fertile hyphae indicate Helminthospo- 
rium rather than Clasterisporium. 
CLASTERISPORIUM PULVINATUM E. & E. 
On dead stems of Bigelovia or Gutierresia, Baldwin, Colo., 
June, 1897. (Bethel, no. 309. ) 
Forming pulvinate, orbicular, black flattened tufts, %—-1 mm. 
diam., closely embraced by the margin of the ruptured epidermis ; 
conidia erect, sparingly branched, 12—15-septate, scarcely con- 
stricted, 100-120 12-15 #, narrowed at intervals. 
CERCOSPORELLA HELIANTHELLAE E, & E. 
On leaves of Helianthella quinquenervis, Deep Creek Lake, 
Colo., August 11, 1894. (Prof. C. S. Crandall, no. 194.) _ 
Spots light brown, irregular, subangular, subconfluent, 2-3 mm. 
diam. ; hyphae epiphyllous, densely tufted, tufts crowded so as to 
form a white granular coat on the spots, 20-30X4¥y, simple or 
with a short rudimentary branch or nodule near the tip, or sub- 
dentate, hyaline ; conidia cylindrical, hyaline, uniseptate, slightly 
attenuated towards the ends, 30-60X2™% Ht. 
CERCOSPORA MACROCHAETA E. & E. 
On leaves of Quercus chrysolepis, Jackson, Amador County, 
Calif. (Geo. Hansen, no. 1334.) 
Hypophyllous. Hyphae rudimentary, consisting merely of 
aggregations of brown cells seated on the stellate hairs scattered 
over the lower surface of the leaf; conidia flagelliform, clear, 
light brown, 100-190 # long, the lower end for 15-20 in length 
swollen and 3-5-septate, often constricted at the septa, the upper — 
_ part gradually attenuated to the subobtuse extremity, slightly 
curved. 
