76 
Mycologia 
escaped a fate which might have been theirs had they fallen into 
other hands. The existing confusion lead Coleman (p. 620) to 
say that “ it would appear that a careful revision of the species 
Phytophthora omnivora is needed and this seems particularly 
necessary for those fungi from outside of Europe which have 
been identified as this species.” It is, however, today the Euro- 
pean forms of the species which are in most need of a careful 
revision. 
From time to time a rot of pome fruits has been noted from 
Europe and ascribed to this species. It was first reported by 
Osterwalder (1906) on apples in Switzerland. As inoculations 
on Sempervivium tectorum were successful it was referred to this 
species. A rot of pears in Belgium was recorded by Marchal 
(1908) and in Bohemia by Bubak (1910), both of whom also 
refer the fungus to the present species. More recently Oster- 
walder (1912 a) has added the strawberry to the list of fruits 
attacked, recording a serious outbreak in Switzerland. The same 
author (Osterwalder, 1912 b ) records an attack upon young apple 
nursery stock in which some varieties had almost all the twigs 
killed. As these young trees grew adjoining the strawberry patch 
which was so seriously infected it was presumed that this was the 
source of infection. In all these cases both conidia and oospores 
were produced in abundance. The figures and descriptions indi- 
cate that more than one species of Phytophthora may be con- 
cerned and that in all probability none of these outbreaks were 
really due to the species which is credited with the damage. 
Another European record under the name of this species is also 
furnished by Osterwalder (1909) who found a Phytophthora 
attacking Calceolaria. To judge both by the host and the de- 
scription this may be referable to P. Cactorum as now under- 
stood, but further information concerning the fungus on this host 
is highly desirable. 
The nutmeg tree ( Myristica fragrans ) in Java suffers from 
attacks on its leaves and growing twigs by a fungus which Zim- 
mermann (1907) has identified as “Phytophthora spec. (Ph. 
omnivora de Bary?).” The conidia are ovate, prominently 
papillate, with a portion of the conidiophore adhering as a pedicel, 
measuring 20-60 X 17-3 0 /*• The conidiophores are typical of the 
