390 BOTANICAL GAZETTE [june 
the mycelium of which agreed entirely with that in the stem. 
In a moist chamber Botrytis appeared on many of the plants. 
Material received the following year showed no trace of Botrytis ; 
otherwise the disease was exactly the same. Cultivated on 
bread the fungus produced abundant sclerotia but no Botrytis, 
while in the previous year the conidial form appeared in cultures 
regularly. The author concludes that the organism is similar to 
Sclerotinia Libertiana in every way except for the Botrytis con- 
idia, which form is supposed to characterize S. Fuckeliana, and 
states that one of two cases is possible ; either the Botrytis is 
secondary on stems affected primarily with S. Libertiana, or else 
the fungus occurs varyingly, with or without Botrytis conidia. 
The results of inoculation experiments with Botrytis conidia 
appeared to support the latter hypothesis, that the Sclerotinia 
may appear with or without Botrytis. Whether it should be 
called Fuckeliana or Libertiana the author was unable to decide. 
Some time after the above was published, in the spring of 
1898, the writer visited Dr. Behrens at Karlsruhe and was 
informed by him in regard to this disease that after more 
extended observation and consideration he inclined to the opinion 
the Botrytis and Sclerotinia might after all have been distinct 
species on the hemp, having no connection with one another. 
Tichomiroff (1) found a disease of hemp in Russia with which 
that described by Behrens appears to be identical. He observed 
numerous sclerotia and named the form Peziza Kaufmanniana. 
No mention is made of a Botrytis stage. De Bary(3) found it 
possible to infect hemp with ascospores of Sclerotinia Libertiana 
and decided that Kaufmanniana was the same species. 
Hazslinszky (2) found a fungus parasitic on hemp in Hun- 
gary which he named Polyactis (Botrytis) infestans. Behrens 
considered this as probably a form of B. cinerea, although the 
conidiophores, as figured by Hazslinszky, are articulated in 4 
peculiar manner. 
Hiltner (6) found a hemp disease with symptoms agreeing 
with those described by Behrens, Tichomiroff, and Hazslinszky, 
wherein no sclerotia appeared but abundant Bosrytis cinerea. 
