194 
Mycologia 
Mt., Baracoa, during the month of March. The host is a species 
of Triumfetta, apparently T. Lappula L., a species which was also 
collected in the same region. The Cuban material is slightly more 
slender than the Ecuadorian, but is otherwise the same. 
Pseudoperonospora Humuli (Miyabe & Takah.) nom. nov. 
Peronoplasmopara Humuli Miyabe & Takah. Trans. Sapporo Nat. 
Hist. Soc. i: 153. 1907. 
Pseudoperonospora Celtidis Humuli Davis, Science II. 31: 753; 
(hyponym). 1910. 
Plasmopara Humuli Miyabe & Takah. in Sacc. & Trott. ; Sacc. 
Syll. Fung. 21: 861. 1912. 
This species first attracted attention by a serious outbreak in the 
hop-fields in the Province of Sapporo, Island of Hakkaido, Japan. 
It was later collected on the wild hops of the same island as well 
as on those of the Island of Honshu. Some years later Doctor 
Davis collected a fungus on the wild hops of Wisconsin which he 
considered quite close to P. Celtidis, but entitled to subspecific 
rank. Through the kindness of Mrs. Flora W. Patterson the 
writer has been able to examine Japanese material of this species 
and to compare it with specimens submitted by Doctor Davis. As 
in the case of Kawakamia Cyperi the measurements of the Amer- 
ican material do not agree exactly with those of the Japanese spe- 
cimens, but otherwise the similarity is too great to admit a ques- 
tion of their identity. 
Peronospora Erodii Fuckel. Fungi. Rhen. 2102. 1867 — 
Symb. Myc. 68. 1869 
This species was issued by D. Saccardo in his Mycotheca Italica 
890 as Plasmopara Erodii (Fuckel) D. Sacc. A note on the label 
states that in as much as the form on Erodium produces conidia 
which germinate by zoospores it cannot be considered identical 
with Peronospora conglomerata Fuckel, on Geranium, to which 
European mycologists usually refer it. The correctness of this 
observation is further supported by the form of the conidia and 
the type of the conidiophores which indicate that the species is a 
member of the genus Pseudoperonospora and should be known as 
Pseudoperonospora Erodii (Fuckel) G. W. Wilson. 
