[Vor. 8 
300 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
The spores of Lenzites saepiaria germinate freely in acid media, 
and this is the only case where the sugar beet decoction fails to 
stimulate germination in the alkaline cultures. 
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ig. 7. Botrytis cinerea in (1) a medium composed of M/5 mannite so- 
lution and sugar beet decoction and (2) “water H;PO, and NaOH" (25? C.). 
Penicillium cyclopium does not appear to be as dependent 
upon the stimulating effects of hydrogen ions as Aspergillus 
and Botrytis, and the same to a greater degree may be said of 
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Fig. 8. Aspergillus niger in M/5 mannite solution. 
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Fusarium sp. 'The 2 organisms referred to, Penicillium and 
Fusarium, are conspicuous for their double maxima; one on the 
acid side, and the other near neutrality. 
