24 Agricultural Exi)erirrtertt Station Research Bulletin llf. 
Table 2 (Continued). — A morjjliologieal conijyarison of the 
■sjyecies of Fusariiiin ooi soy hean and eow^ea, 
F. tracheiphilum. 
Medium 
Macro- 
conidia 
Sporodochia 
Sclerotia 
Color of 1 
mycelium j 
Character 
of mycelium 
Standard 
nutrient 
agar 
None 
Flesh- 
colored 
White 
Mostly sub- 
merged or 
appressed 
String-bean 
agar 
No measure- 
ments 
Salmon- 
colored; 
few 
Mostly 
flesh- 
colored; 
some green ' 
do 
i 
do 
Oat hard 
glucose 
agar 
22.5 to 36.9 
by 3.8 to 
4.42 M 50 
days old 
Flesh- 
colored 
1 
Dark-green 
and flesh- 
colored 
1 i 
Mostly dark 
: purple; 
some lilac 
Cottony to 
matted and 
appressed 
Steamed rice 
jPinks, reds, 
1 lilacs, 
purples 
1 
Potato plugs 
24.6 to 36.9 
by 3.28 to 
4.42 /A 19 
days old 
Salmon- 
colored; 
often on 
sclerotia 
Flesh- 
colored; 
often none 
Pinks, lilacs, 
: greens 
1 
1 
Mostly 
appressed 
Stem plugs. 
No measure- 
ments 
Salmon- 
colored; 
small; 
sometimes 
none 
Green ; very 
small;'* 
numerous 
White; 
; sometimes 
, green, near 
sclerotia 
i 
A pp resse d; 
i good growt-h. 
No mention is made in Table 2 of jdonnotes or odors, as none 
was ])rodiieed in any of the cultures. Only color-])roduclion was 
noted on st(‘amed rice. The macroconidia of both strains show a 
wide variation both in size and in shape, but these ditl’erences can 
])ro|)(‘rly b(‘ included in the ranine of variation. The normal 
mari’ocvniidia of tlu‘ soy bean ( tiir. 4, A-(0 and cowpea strains arc 
indistiniiuishablc. The chlamydosj)ores of either strain arc ter- 
minal ()!• int(‘rcalarv in or on vegetative lilaments and average 
() to 10.25 /A in diameter. The conidiophores are verticillately 
branch(‘d wIhmi normal. Sporodochia, altho sometimes llesh- 
colon‘d, ai*(‘ normally salmon-colored. They are not always present 
on all media but are foi’ined by each strain either on sclerotia or 
on myc(*lia as stromatal bases, (ireen sclerotia are normally. 
j)n*sent in both strains. TIum’c appear to be some ditferences in 
colors prexhuM'd in substrata, altho m4 very consistent ones, a 
