22 Experiment Station Ueseareli Bulletin H 
Tablk 1 (Continued). — Characters xchicli separate a number of 
the wilt- prod a c in g species of Fusarinni from F. tra- 
(•lioij)hiluin and the soy bean fungus. 
Species 
Macr:conidia 
i 
1 Odor 
1 
Size of 3-septate 
Type 
F. discolor 
No data 
1 
Discolor; mostly 
5-septate 
None. 
F. vasinfectum 
Same as in F. 
oxysporum 
Elegans; mostly | 
3-septate 
1 Strong lilac on rice. 
F. oxysporum 
28.7 to 35.6 by | 
3.6 to 4.1 M 
do 
Often none, some- 
times scant lilac. 
F. ly coper sici 
i Abnormal 
do 
None. 
F. niveum 
i Abnormal; (orig- 
inal description ! 
' gives larger than 
^ F. oxysporum). 
do 
do 
F. tracheiphilum . . . 
23.6 to 41.0 by 
3.9 to 4.1 fx 
do 
do 
Fusarium sp. on 
soy bean 
1 24.6 to 35.8 by 
2.89 to 4.1 /X 
1 
do 
do 
From the data in Table 1 it is important to ol)serve tliat 
F. tracheiphilum and the species of Fusarium on soy l)ean belong 
to the section Flegans^ as established by Api)cl and AVollenweber 
(1) and inoditied by Wollemveber (HI) in a subsequent study. 
Th(‘V are themselves very similar in cultural characters, but can 
b(‘, (jiiiti* sharj)ly s(‘parated from the other si)ccies included in the 
tai)uhition. \\dum the charact(*rs of the species of Fusarium on 
the, cowp(‘a and soy bean noted in this table are compared with 
thos(‘ in the orin:inal d(‘scri|)t ions of certain other members of the 
section Flegaus — namely, F. redolens^ F. orthoceras, and F. con- 
glutinans — tIuMV is j)lainly no chance of their confusion. F. 
redolnts (H)l) pi-oduc(‘s no blue sc'lerotia, and its conidial masses 
ai’(‘ bi’ownish whitt*: F. orthoceras {2i>) possesses neither sclerotia, 
sporodochia, nor j)ionnot(‘s; and F. eonglutinans (HI) is distin- 
^uish(‘(l b(*caus(‘ of the absence' of sch'rotia, s])orodochia, or j)ion- 
iioti'S, and the typical wine-red to j)ur[)le colors of the section. 
