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N. C. AGRICULTURAL EXPERIMENT STATION. 
ducing Peziza (Sclerotinia).” Stone and Smith 8 of the same station 
accepted this conclusion, but in 1898 and 1899 an extended study of 
Sclerotinia libertiana led them to believe that the Botrytis upon lettuce 
was not the conidial form of this Sclerotinia. Bamsey 13 of Wisconsin 
in 1904 considered the “drop” (Sclerotinia) as distinct from Botrytis. 
Hume 12 of Plorida in 1901 believed this Sclerotinia to be entirely 
distinct from Botrytis. 
Finally, Wulff, 24 also Westerdijk, 25 in recent papers upon these 
fungi, accept the conclusion that Sclerotinio libertiana has no Botrytis 
conidial stage. 
Our experiments and observations bring out clearly the following 
facts: 
1. That sclerotiniose may prevail in beds for months with its char¬ 
acteristic white mycelium with no accompaniment of botryose. 
2. That botryose may similarly prevail in other beds with no accom¬ 
paniments of sclerotiniose. 
3. That in all of our cultures of these two fungi extending over an 
aggregate of some seven years, involving thousands of tube and plant 
inoculations, there has never occurred an instance of apparent change, 
in any way, from one of these forms to the other. 
4. That the sclerotia of Sclerotinia differ in size and general ap¬ 
pearance from those of Botrytis, and that in cases of botryose the 
sclerotia of Sclerotinia are not produced. 
5. That the sclerotia of Botrytis invariably produce hyphge and coni- 
dia upon germination, and that the sclerotia of Sclerotinia never do so. 
6. That the sclerotia of Sclerotinia invariably produce ascospores, 
or at least abortive attempts to do so, while the sclerotia of Botrytis 
never do so. 
We believe therefore that the evidence is sufficient to warrant the 
conclusion that these two fungi and the diseases caused by them are 
distinct and that one bears no present relation to the other, whatever 
their phylogenetic relation may be. 
