Sumstine: North American Hyphomycetes 
51 
spores concatenate, ellipsoid, irregular in shape, hyaline or light- 
colored, 10-12 X 16-18/X. 
On cherries. 
Specimens examined : Pennsylvania, Everhart, 484. 
This species is closely related to the preceding species. The 
spores are smaller and the tufts are not so large. 
3. Oospora Cerasi (Tracy & Earle) 
Monilia Cerasi Tracy & Earle, Greene PI. Baker, i : 35. 1901. 
Eflfused, covering the entire fruit with a white coating, finally 
becoming ash-colored ; mycelium developed in the fruit, branched ; 
sporophores short, erect, branched, bearing the concatenate spores ; 
spores spherical, lemon-shaped, hyaline or slightly colored, 10-12 fi. 
On immature fruit of wild cherry. 
Specimens examined: Colorado, Tracy and Earle, 108 s (part 
of the original collection). 
The effused growth and smaller spores distinguish this species 
from the two preceding species. 
4. Oospora Linhartiana (Sacc.) 
Monilia Linhartiana Sacc. Syll. Eung. 4: 34. 1886. 
Effused, thin, gray-white, spreading along petioles and veins of 
leaves ; mycelium scanty, septate, hyaline ; sporophores short, 
simple or branched, with chains of spores ; spores globose, sub- 
globose or ellipsoid, 10-12 X 12-18 /x. 
On Prtinns sp. 
Specimens examined: Canada, Dearness, 468; Maine, Thax- 
ter; Wisconsin, Stevens. 
The spore measurements given by Saccardo are somewhat 
larger than those given above. 
5. Oospora fungicola (Ellis & Barth.) 
Monilia fungicola Ellis & Barth. Erytljea 5 : 50. 1897. 
Effused, thick, forming a felt-like coating, ashen-gray ; my- 
celium hyaline, interwoven, branched, septate ; sporophores erect, 
simple, short ; spores in short chains, hyaline, ellipsoid, irregular, 
15-23 X 20-so fi. 
