1913] MATHENY—BROWN-ROT FUNGUS 429 
In order to determine what variation in size of asci and asco- 
spores Occurs in this country, a series of measurements was made 
of fresh material from different states. The measurements were 
made in the usual way. In each instance 100 ascospores and 70 
ascl were measured. From the resulting figures the following 
table is arranged. 
MEASUREMENTS OF ASCI AND ASCOSPORES 






Apothecia from Host Asci Ascospores 
New Haven, Conn........ Peach 144-188 X6.8-10.8 | 10.8-14.4%4.3-7.6 
Mostly 1628.6 Mostly 12.6X%5.4 
etien, Maw. 6.3 cs. Peach 136-202 X7.5 II.5-14X5-7. 
Mostly 169X9.4 Mostly 125.4 
Grafton, Mass........... Plum 144-162 X7.2-10 10-14 X5-7.6 
ostly 151X9.3 ostly 12.2X6.1 
West Boylston, Mass...... Peach 133-187 X6.8-10 10.8-15.1X5.4-7.2 
Mostly 158X8.2 Mostly 12.9X6.1 
College Park, Md........ Peach 129-194X7.2-10.8 | 8.6-15.1X5-7-7-9 
Mostly 162X9.3 Mostly 12.26.4 
College Park, Md......... Plum 126-183 X6.5-10.8 | 8.6-14.4X5-7-2 
Mostly 151X9.6 Mostly 11.5X6.4 
Madison, Wis. ..... 2.5: 5. Peach 137-190 X6. 5-10 10.8-15.1X5- 
Mostly 165X9.3 Mostly 13.1X6.5 
Geneva, New York....... Peach 133-176 X6.5 11.5-14.4X5.- 
Mostly 1608.4 Mostly 12.8X6.2 
Lafayette, Ind... ...:..... Peach 135-192X7.2-1 9.4-13.7X5.6-7.9 
‘2 
Mostly 166X8.8 Mostly 12.26 


GENERAL AVERAGE OF THE ABOVE MEASUREMENTS 


Host Asci Ascospores 
POM oon as ea 135-190X6.9-10.5 | 10.5-14.5X5.2-7-5 
"hhcstly 163X8.9 Mostly 12.56 
Pi ey 135-173X6.8-10.8 | 9.3-14.2X5-7-4 
Mostly 151X9.4 Mostly 11.8X6.3 © 
It is seen that the results here obtained correspond closely 
with the measurements given by Portock and ReaDe, indicating 
that the same species was considered in all three cases. It is 
further noted that these measurements correspond with those oven 
by ADERHOLD and RuHLAND for the European S. fructigena and 
are very little larger than those given by them for their 5. c; 
which they obtained from apricots. It is to be remembered — 
in the case of both these species very few measurements have been 
i a ei | i 
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