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IOWA ACADEMY OP SCIENCE 
133. Cercospoea Echinocystidis Ellis & Martin. 
On Echinocystis lobata (Michx.) T. & G. (Micrampelis Greene.) 
A single vine was found scantily infected. 
134. Cercospoea Geraxii Kell. & Swing. 
On Geranium maculatum L. 
Found sparingly in midsummer. 
135. Cercospoea grajs-ulieoemis Ellis & Holw. 
On Yiola sp. 
Not uncommon in midsummer. 
136. Cercospoea Heucheei Ellis & Mart. 
On HeucJiera hispida Pursh. 
- Infrequent, but with an abundant infection where found. Collected in July. 
137. Cercospoea Menispermi Ellis & Holw. 
On Menispermium canadensis L. 
Common and abundant during the entire summer. 
138. Cercospoea Oxybaphi Ellis & Plolw. 
On Oxyhaphus nyctagineus (Michx.) Sweet (Allonia Michx.) 
Not common nor abundant. Collected during midsummer. 
139. Cercospoea polygonoeum Cooke. 
On Polygonum Hydropiper L. 
Not uncommon and where present quite abundant. The blackish hypophyl- 
lous growth makes this a very conspicuous species. 
140. Cercospoea racemosa Ellis & Mart. 
On Teucrium canadense L. 
Not very common but fairly abundant in infected patches of the host. 
Autumn. 
141. Cercospoea eosaecola Pass. 
On Rosa pratincoJa Greene. 
Not common, appearing in midsummer. 
142. Cercospoea Sii Ellis & Everh. 
On Sium cicutaefolium Gmel. 
Not common, but where present rather abundant. Midsummer. 
143. Cercospoea Toxicodendri Ellis. 
On Rhus Toxicodendri L. (R. radicans L.) 
Not uncommon and in some places at least, quite abundant. The infected 
areas suggest the work of some insect as the discoloration is about the same as 
that produced by the drying sap of the host. On the under surface the conidia 
give the spots a frosted appearance. The species is of more than ordinary 
interest as the note appended to the description in Ellis and Everhart’s Enumera- 
tion of the North American Cercosporae is “On leaves of Rhus Toxicodendron, 
