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3. R. mammiformis (Pers.) Ces. & De Not. 
Spheria mammiformis Pers. 
Hypoxylon mammeeformee Berk. 
Hypoxylon globulare (Bull.) Fekl. 
Rosellinia mammiformis Sace. 
Perithecia gregarious, crowded or confluent, globose, large, 1-1.5 mm. 
in diameter, fragile, black and bare but not shining. Ostiolum abrupt, 
paliliiform. 
Asci (p sp.) 8-10 x 100-115 microns (BH. & EF). 
Spores 10-12 x 20-25 microns, oblong, elliptical, sometimes slightly 
curved. H. & EE. give sporidia 7-9x 19-25 microns, without any 
distinct apiculus. It can be easily dsitinguished from R. aquila by the 
blacker, thinner walled and more fragile perithecia and the lack of a 
decided subiculum. 
On bark of Acer, near Bloomington, Ind. 
4. R. glandiformis BE. & E. 
Perithecia scattered, the base sunk in the wood about one-fourth, 
ovate-globose, roughened with glands, with a reinforcement around the 
lower half similar to the cup of an acorn. This thickening is, however, 
sometimes reduced to a mere granular coat. Ostiolum papilliform, small, 
sometimes obsolete, the apex being evenly rounded. 
Asci not present in specimens at hand. EH. & E. give (p sp.) 810 x 
100-114 microns; paraphyses abundant. Spores 7-10 x 13.75-17.5 microns. 
EH. & E. give 7-8 x 14-15 microns. Common on Loriodendron Juglans and 
Fraxinus, Monroe County, Indiana. 
5. R. mutans (C. & P.) Sace. 
Spheria mutans C. & P. 
Rosellinia mutans Sace. 
Perithecia more or less crowded or gregarious, rather small, about 
.5-.75mm. in diameter, at first clothed with a thin, tawny, evanescent 
tomentum, finally becoming smooth, black and shining; mostly globose 
with a papillate ostiolum. In the specimen at hand the region about the 
ostiola showed a distinct tendency to depress. 
Asci subcylindrical (p sp.) 6.5-7.5 x 80-92.5 microns. 
Spores uniserrate, elliptical, brown, 4.25-5.5 x 9-12.5. 
Common on decaying Juglans, near Bloomington, Indiana. 
