20 
NEIL E. STEVENS 
Table VIII 
Observations on the Development of Perithecia and Mature Ascospores at Various 
Localities 
Locality 
Inoculations Made 
No Peri- 
thecia Up 
to and In- 
cluding 
Perithecia with Mature 
Ascospores First Observed 
Additional Notes 
Charlottesville, 
Va. 
Fairfax, Va. 
Vienna, Va. 
Washington, 
D. C. 
Frederick, Md. 
Woodstock, Md, 
Van Bibber, 
Md 
Wilmington, 
Del. 
Apr. 20, May 21, 
July 3, Aug, 
1 1, and Oct. 2. 
1914. 
Apr. 21, June 6, 
July 4, Aug. I, 
and Oct. 24, 
1914. 
Apr. 2, May 14, 
June 6 and 
July 18, 1915, 
Apr. 22, May 
28, June 25, 
July 28, and 
Oct. 21, 1914, 
Apr. 27, May 30, 
Aug. 9, and 
Oct. 19, 1914. 
.do. 
Apr.28, May 14, 
June I, July 
6, Aug. 10, 
Oct. 7, 1914; 
May 14, 1915. 
Apr. 29, May 
14, June I, 
July 6, and 
Aug. 10, 1914. 
Dec. 24, 
1914. 
Dec. 23, 
1914. 
Aug. L 
1915- 
Dec. 25, 
1914. 
Dec. 20, 
1914. 
Dec. 27, 
1914. 
Dec. 28, 
1914. 
Dec. 28, 
1914. 
June 6, 1915. On 
cankers from all 
inoculations ex- 
cept those of Oct. 
24, 1915 and Aug. 
6, 19 1 5, from in- 
oculations of Oct 
24, 1915. 
Sept. 21, 1915. A- 
bundant from all 
inoculations. 
A few mature peri 
thecia, Apr. 22, 
19 1 5, from inocu 
lations except 
those of Oct. 21, 
1914. Abundant 
July 28, 1915, on 
all. 
May 14, 1915. A 
few from inocula- 
tions of Apr. 27 
and May 30, 1914, 
Aug. 9, 1915. Nu- 
merous on all in- 
oculations. 
May 14, 1915, from 
all inoculations ex- 
cept those of Oct. 
7, 1914. Oct. 7, 
1915, from all in- 
oculations, includ- 
ing those of May 
14, 1915. 
May 14, 1915. Nu- 
merous from in- 
oculation of April 
29. Few from in- 
oculations of May, 
June, and July. 
Aug. 10, 1915. Nu- 
merous on all men- 
tioned above. 
Destroyed by fire 
last week in Apr., 
1915. 
One of the trees in- 
oculated Apr. 21, 
1914, died during 
that summer and 
no ascospores 
were produced on 
this tree. 
Perithecia more 
abundant on in- 
oculations o f 
June 6 and July 
18 than previous 
ones. 
In 19 14 there was 
less development 
of pycnospore 
horns from May 
30 to Aug. 9 
than in the 
month preceding 
May 30. 
No perithecia were 
developed from 
the inoculations 
made Aug. 10, 
1914, but the 
number from the 
earlier inocula- 
tions were greatly 
increased. 
