80 
Mycologia 
type of gametes and the complete absence of periplasm in the 
oogonium that the family Phytophthoraceae may perhaps be con- 
sidered as constituting the order Phytophthorales. 
The name Nozemia for the Cactorum-group of species is 
entirely unnecessary, as one of the species included in this new 
genus is itself the type of a monotypic genus. When Klebahn 
first published an account of P. Syringae he had only the oospores 
which he recognized as belonging to the Peronosporales, and in 
absence of conidia he described the fungus as Phleophythora 
Syringae. As the genus was founded on the sexual phase of a 
polymorphic fungus certainly there can be no objection to its 
validity forthcoming from an adherent of the European views on 
the nomenclature of such fungi. Klebahn’s name must, there- 
fore, take the precedence, with the following species: i. Phleophy- 
thora Syringae Klebh. ( Phytophthora Syringae Klebh.), 2. P. 
Fagi (Hartig) n. nom. ( Phytophthora Fagi Hartig), 3. P. 
Cactorum (Lebert & Cohn) n. nom. ( Peronospora Cactorum 
Lebert & Cohn, Phytophthora Cactorum Schroter), 4. P. Nico- 
tianae (Van Breda de Haan) n. nom. ( Phytophthora Nicotianae 
Van Breda de Haan). 
P. Faberi on account of its imperfectly known life history 
cannot be definitely assigned to a genus, so it may well remain as 
at present placed. As P. omnivora is here recognized as an 
aggregate of undetermined affinity it need be considered no 
further. 
New Brunswick, 
New Jersey. 
BIBLIOGRAPHY 
Berkeley, M. J. 
1881. Lilac fungus. — Gard. Chron. II. 16: 665. f. 135. 
Bubak, F. 
1910. Die Phytophthorafaule der Birnen ini Bohmen. — Zeitschr. Pflanzenkr. 
20: 256-261. pi. 4 + f. 1, 2. 
Butler, E. J. & Kulkarni, G. S. 
1913. Colocasia blight caused by Phytophthora Colocasiae Rac. — Bot. Mem. 
Dept. Agr. India 5 : 233-261. pi. 1-4. 
Clinton, G. P. 
1906. Downey mildew, Phytophthora Phaseoli Thaxt., of lima bean. — Rept. 
Connecticut Agr. Expt. Sta. 1905 : 278-303. pi. 20-22. 
