1909] STEVENS & HALL—VARIATION OF FUNGI 13 
pink. Sometimes black spots developed on the first of these media 
but not upon the second. This fungus shows strikingly the differ- 
entiating value of starch and glucose for fungus culture. 
Upon apple agar still another character developed, a rich golden 
color of the abundant, floccose, matted, aerial hyphae. This reaction 
is fully as striking as the familiar rose color produced by certain species 
of Fusarium.? 
With this fungus we have absence of color in agar and CBA, but 
rich coloring, of varying hues, in the presence of carbohydrates and 
upon apple agar. 
PHYLLOSTICTA SP., FROM APPLE AGAR IN PETRI DISHES 
This fungus grew faster on agar than on CBA, formed pycnidia 
sparsely on agar and not at all on CBA. 
With sodium asparaginate added the mycelium became very dense, 
with considerable aerial development, remained colorless, and pro- 
duced few pycnidia, and these visible only with the two-thirds objec- 
tive. The presence of glucose led to exceedingly profuse pycnidial 
development, while on starch the growth was as with CBA+ sodium 
asparaginate, showing again the ability to utilize glucose but not, 
starch. 
ALTERNARIA SP., FROM LAWSON CARNATION 
This fungus, the cause of an apparently undescribed carnation 
disease which will be the subject of a subsequent paper, was isolated 
during October, 1908. There were striking differences in the color 
of the colony upon different media, varying from merely hyaline to 
dense black. The size and color of the spores were also so modified 
as to give much more than what is usually regarded as a specific 
difference. 
On pure agar, CBA, CBA+ammonium lactate, CBA+sodium 
asparaginate, and upon CBA+-ammonium lactate + sodium asparagi- 
nate, the mycelium was colorless and the colony correspondingly 
colorless; while upon CBA+sodium asparaginate + starch and CBA 
+sodium asparaginate+ glucose, the mycelium was very dark, more 
profuse, more freely branched, and the colony therefore of an entirely 
different aspect. 
9 BESSEy, ane Ueber die Bedingungen der Farbbildung bei Fusarium. Inaug. 
Diss. Halle. 
