FLORIDA STATE HORTICULTURAL SOCIETY. 
75 
tarding the usefulness of the yellow fun¬ 
gus. Dr. Morrill observes (circular to the 
Press) that the Red Aschersonia is rarely 
attacked by the Cladosporiuni. 
Dr. Morrill has recently called my at¬ 
tention to another fungus in the Manatee 
country which he believes may be a super- 
parasite of the brown. This fungus which 
occasionally overruns the brown much re¬ 
sembles a certain stage of the black scale 
'{u\\g\\?>,Myrangmnh duryii, but a com¬ 
parative examiination of these two by 
Professor Fawcett has so far failed to 
verify the possibility of their indentity. 
Personally, I believe in regard to this fun¬ 
gus as I do in regard tO' the Cladosporium 
overrunning the yellow fungus previously 
considered, that it attacks the brown fun¬ 
gus only after the latter has become weak¬ 
ened from old age or other causes such as 
drought, etc. To sum, up, it appears that 
we have in these two possible super-par¬ 
asites a new issue for investigation. 
CONDITIONS FAVORABLE FOR THE FUNGI. 
Nearly all fungi thrive best in the pres¬ 
ence of an abundance of moisture, es¬ 
pecially in a moist atmosphere. The 
past year has given me abundant evidence 
that the fungi parasitic on the larvae and 
pupae of the whitefly spread and increase 
but little during cool or dry weather. 
This fact limits the time for their intro¬ 
duction into whitefly infested trees and 
groves to the rainy season of the year or 
to the months of June, July, August and 
parts of May and Septtember. These are 
the months during which success is most 
assured, but other periods of rain and 
warmth will be favorable. The moisture 
conditions may also be favorably supple¬ 
mented by permitting plenty of vegeta¬ 
tion in the nature of cover crops, wind¬ 
breaks, etc., to grow at the proper season. 
Irrigation or sprinkling, where the outfit 
is at hand; will help in creating and con¬ 
serving a moist atmosphere in a grove. 
INTRODUCING THE RED AND THE YELLOW 
ASCHERSONIAS. 
The chief drawback to introducing the 
fungi has been the supposed difficulty of 
starting (“planting”) them in whitefly- 
infested trees. The matter appears 'to be 
much more simple than was heretofore 
supposed. At Lake City the writer suc¬ 
ceeded (June 20 and August 8th, 1906) 
in introducing the Red Aschersonia into 
four out of five trees by pinning leaves, 
with an abundance of fungus pustules 
upon them, to the leaves of the trees. In 
two instances the fungus started in an¬ 
other part of the tree some distance from 
the pinned leaves, but as no other infected 
trees could be found within one-half mile 
of these, it is considered safe to assume 
that the fungus started from the infected 
leaves placed there. In two of the success¬ 
ful instances the leaves with the fungus 
pustules Upon them were dry and had 
been picked about a month before being 
pinned into- the trees, showing that the 
spoi'^s of the fungus retained their vitality 
for at least a month and nO' doubt longer. 
It was also' found that the fungus had 
started in three different trees at Lees¬ 
burg, into which Judge J. B. Gains had 
pinned some leaves. No' Red Ascherson¬ 
ia had hitherto been observed at Leesburg. 
Since writing the first part of this para¬ 
graph, the writer has found the fungus 
started in each of thiTty-seven trees into 
which he had pinned leaves of the Red 
Aschersonia six weeks previously (August 
15th) at Leesburg. In all, forty-two trees 
had been treated in this manner, but five 
of them were not examined for lack of 
