IOWA ACADEMY OP SCIENCE 
49 
in these forms. At the conclusion of the list is a host index, which 
includes cross references to the synonomy of the hosts. Such synonyms 
have been cited for the species as the name employed might make neces- 
sary, and where the name employed by Greene in his ‘‘Plants of Iowa” 
is not the same. 
In conclusion I wish to express my hearty appreciation of the kindness 
of Dr. J. C. Arthur in verifying my determination of the Uredinales, 
and for suggestions in this group. 
CLASS PHYCOMCETES. 
OEDEE CHYTEIDIALES. 
Family Synchytriaceae. 
1. Synchyteium aecidioides (Peck) Wilson & Seaver. lUredo aecidioides 
Peck; S.' fulgens decipiens Farlow.] 
On AmpMcarpa monoica (L.) Ell. and A. Pitcheri T. & G. (Falcata 
Kuntze.) 
Our commonest species of the genus. The yellow sori which are home in 
great profusion on leaves, stems, and immature fruits of the host renders the 
infected plants quite conspicuous. Very abundant upon the first host, but 
sparingly on the second. 
2. Syxchyteium anemones (de Bary & Woronin) Woronin. 
On Anemone quinquefolia L. 
The purple sori of this species are quite abundant on stems and leaves, 
especially along the veins. This host is infested with several fungi two or 
three of which frequently are associated, in the present instance the commonest 
one being Urocystis anemones. The epidermal covering of the smut serus is fre- 
quently covered with an abundance of the galls of the Syncliytrium. 
3. Synchyteium fulgens. Schroeter. 
On Oenothera Mennis L. (Onagra Scop.) 
A single rosette was found infected with this fungus late in May. 
4. Synchyteium Holwayi Farlow. 
On Monarda fistulosa L. 
A conspicuous species owing to the stunting and slight hypertrophy of the 
host and the bright purple color of the galls. First noted about the middle of 
July. 
OEDEE ENTOMOPHTHOEALES. 
Family Entomophthoraceae. 
5. Entomophthoea Muscae. (Pers.) Fries. 
On Musea domestica L. 
The cause of a considerable mortality among house flies in the late autumn. 
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