185 
Isolated from dead corn-stalk in Tennessee by C. E. Kurtzweil. 
Data on conidial length of H. No. 36 are as follows: 
Frequency, 1 2 3 3 6 11 12 10n 12 ef | 9 
Microns, 34 37.1 40.8 44.2 47.6 51 54.4 57.8 61.2 64.6 68 71.4 
Frequency, 10 15 12 11 7 6 3 3 0 2 1 
Microns, 74.6 78.2 81.8 85 884 91.8 95.2 98.6 102 105.4 108.8 
Conidial breadth ranged uniformly from 10.2 to 13.6 microns. 
Data on septation are as follows: 
Frequency, 3 3 6 13 17 8 6 1 1 
Septa, 4 5 6 7 8 0. 10! “arate 
Description of H. No. 39—Conidia short, quite uniform in size, 
cylindrical or very slightly tapering from point of maximum thickness 
(PJ. XXI, 6). Hilum usually evident. Setpa thick, usually three; no 
constriction. Apical spot barely perceptible. Episporium brittle. Endo- 
sporium gelatinous. Conidiophores uniform; sterile portion 190-250 yu long, 
smooth, 3.5 yw. thick, not constricted, cells about 17-24 up long; fertile por- 
tion much darker and nearly twice as thick as the sterile part, genicula 
very congested, numerous, usually 35-70 w long. Conidia remaining at- 
tached in very large clusters. 
Data on conidial length are as follows: 
Frequency, 1 1 1 2 13) 19) 19 9 3 2 0 1 
Microns, 6.8 10.2 13.6 17 20.4 23.8 27.2 30.6 34 37.4 40.8 44.2 
Conidial breadth was quite uniformly 10.2 uz. 
Data on septation are as follows: 
Pirequencyamse arth 3 1 31 
Septalircy.cctiecriicecn| al 2 3 
This organism produced on wheat many infection points with the 
appressoria and “‘callus,’’ but differed from H. No. 1 in the minute characters 
of the infection spot. 
H. No. 46 is very closely like H. No. 39. Data on the conidial length 
of H. No. 46 are as follows: 
Frequency........... 1 3 4 8 15 4 1 
IMiGrOnSi, awa ere 8 20.4 23.8 27.2 306 34 37.4 
Conidial breadth was uniformly as follows: 
TEGUENGY an miners 2 11 1 
Microns=ceimancen te cete 0:58 eel Od te tS:6) 
The data on septation are: 
erequenGync ieee racer ail 1 15 
Miicrons ir c.ccneen tetera 2 3 
