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1, &. aquila (¥Fr.) De Not. 
Sphieria aquila Ir. 
Spheeria byssiseda Meck. 
Rosellinia aquila De Not. 
Perithecia large, globose, 1-1.25 mm. in diameter, gregarious, crowded 
or sometimes confluent, with a distinct black, conie-papilliferm ostiolum ; 
dark brown at first with a thin tomentose coating, finally becoming bare. 
Subiculum rather thick and prominent, dark to purplish brown, nearly en- 
veloping the perithecia at first but finally disappearing to a greater or less 
extent. Outer walls ef the perithecia thick, brittle and carbonaceous. 
Inner wall coriaceous. Asci long, cylindrical (p sp.) 10-12.5 x 165-190 mi- 
crons. Spores uniserrate, oblong, brown, 10-11 x 22.5-27.5 microns. (E & E) 
giyes asci (p sp.) 810x 100-180 microns. Sporidia 6-9 x 16-27 microns, 
with or without a short, obtuse, hyaline apiculus, 2-2.5 microns long at 
each end. 
Common on decaying and fallen limbs, near Bloomington, Ind. Speci- 
mens at hand are on Fagus, Acer, Quercus and Juglans. 
2, Rk. medullaris (Walls) Ces. & De Not. 
Sphreria medullaris Walls. 
Rosellinia medullaris Ces. & De Not. 
Rosellinia macouniana EH. & FE. 
Perithecia more or less erumpent, large 1-1.5 mm. in diameter, ovate 
to sub-globose, covered at first with a pruinose-pubescent coat of a dull 
red or brick color, becoming black with age; loosely adnate, apex con- 
vex to conie-papilliform, surface dirty-roughened with a finely powdered 
sooty covering; very fragile. Wall double and intermediate in thickness 
between R. aquila and R. thelena. Subiculum slight. 
Spores 7.5-12 x 20-25 microus. KE. & I. give asci (p sp.) 7-8 x 100-120 
microns. Sporidia 6-7 x 19-20 microns; ovoid, somewhat acute, brown, 
broader but not pointed as in R. mammiformis. 
On Cercis canadensis and Juglans, Monroe County, Ind. 
On examining a great number of perithecia the most of them were 
found to contain a white, granular mass such as described in R. medul- 
laris by Saccardo, but close observation showed this material to be a fine 
powder of wood that had been brought into the perithecia from the bottom 
by a smail larva that probably feeds upon the contents of the perithecia. 
