1916] 
GILMAN—CABBAGE YELLOWS 31 
After growth of a few weeks chlamydospores were found 
in most of the cultures, the microspores were beginning to be- 
come abnormal, and the few macrospores were also breaking 
down. The macrospores were found to be produced best on 
potato stems, next best on the potato agar, while very few ap- 
peared on cooked potato plugs and cooked rice. 
Besides the tube cultures, hang- 
ing-drop cultures in a modified 
Uschinsky’s fluid! were observed. 
In this medium the fungus pro- се 
duced microspores abundantly in 
cultures only two days old when 2 
kept ай room temperatures. 
Chlamydospores were found to 
begin to form in cultures but five 
days old, although they did not 
mature insoshorta time. Usually Ж 
the first chlamydospores occurred 
terminally; later other parts of 
the mycelium rounded up to form 
the intercalary spores. 
A revised deseription of the 
fungus is as follows: 
Fusarium conglutinans Wollenw. 
Sporodochia laeking or greatly 
А Fig. 5. Conidia of Е. conglu- 
reduced; pionnotes never present. tinavs. Culture LVI on potato 
idi idi m. ida sketeh x 
Conidia borne on short conidi- gio" Camera luci 
ophores strewn throughout the 
mycelium, majority  non-septate, a few  one-septate 
and three-septate. The non-septate conidia ovoid to 
ellipsoidal, hyaline, 2.5-4 X 6-154, the majority being 2.5-3 
X 7-104. One-septate conidia hyaline, cylindrical, with 
This medium was га modification of the standard Uschinsky’s fluid, and 
was made up as follow 
E она ЗБРОЯ 1000 grams Magnesium sulphate ..... 0.3 grams 
a | EE EE 30 grams CES phosphate .. 2 grams 
oe chloride `. 5 grams Ammonium tartrate ..... 6 grams 
Caleium AA ua ces 0.1 grams od аа, «a. В grams 
gr 
The solution was sterilized at ten pounds pressure for twenty minutes in 
the autoclave. 
