Sumstine; North American Hyphomycetes 
53 
Oosporoidea Lactis (Fres.) 
Oidium Lactis Fres. Beitr. Mykol. 23. 1851. 
Oospora Lactis (Fres.) Sacc. Syll. Fung. 4: 15. 1886. 
Effused, membranaceous, white, forming small patches, some- 
times spreading for a considerable distance ; mycelium inter- 
woven, septate or simple; sporophores not sharply differentiated 
from the mycelium, erect or suberect, dividing into spores ; spores 
in chains, irregular in shape and in size, frequently subglobose 
to ellipsoid, 5-7 X 12-20 /a. 
On cheese. 
Specimens examined : Pennsylvania, Sumstine. 
Toruloidea gen. nov. 
Mycelium scanty, simple or branched ; sporophores erect or 
suberect, simple or branched ; spores simple, formed in chains by 
the division of the sporophore, hyaline or bright-colored. 
Type species, Toruloidea effttsa Sumstine. 
This genus is closely allied with Torula. The principal differ- 
ence lies in the color of the spores; in Torula the spores are dark- 
colored, in Tortdoidea hyaline or bright-colored. The genus is 
separated from Oospora by its delicate structure, less developed 
mycelium, and much smaller sporophores. 
Key 
Pale yellow to yellow. 
Effused. 
Pulvinate. 
White to sordid white. 
Spores globose or nearly so. 
Spores ellipsoid to cylindrical. 
Spores ovoid to obovoid. 
THE Species 
1. T. effusa. 
2. T. Unangst ii. 
3. T. Nicolianae. 
4. T. Tulipi ferae. 
5. T. candidula. 
I. Toruloidea effusa sp. nov. 
Effused, thick, pale yellow to yellow, pulverulent; mycelium 
creeping, branched ; sporophores short, erect, simple ; spores in 
chains, ellipsoid, hyaline or subhyaline, usually with a short 
apiculus, 3-4 X 4-6 /A. 
On decayed wood. Bemus Point, N. Y. 
Specimens examined: New York, Sumstme (type).- 
The type specimen is in the herbarium of the Carnegie Mu- 
seum, Pittsburgh. 
