IOWA ACADEMY OF SCIENCES. 195 



Fafjopyrum esculentiuii Moench. Page and Pottawattamie 

 counties. Waste places; frequent. 



F. tataricum (L.) Gaertn. Decatur county. Waste places; 

 one specimen found. 



Aristolochiace.e. 



Asarum reflexum ambiguum Bicknell. Decatur, Appanoose, 

 Ringgold and Page counties. Rich woods; common. 



A. acuminatum (Ashe) Bicknell. Johnson county. Rich 

 woods; frequent. This and the preceding species have hereto- 

 fore been confused with asarum canadense L. 

 Santalace^. 



Commandra nmbellata Nutt. Page county. 



EUPHORBIACE^E. 



Euphorhia serpens H. B. K. Fremont county. 



E. maculata L. Ringgold and Fremont counties. Waste 

 places; common. 



E. preslii Guss. Ringgold, Page, and Fremont counties. 

 Waste places; common. 



E. marginata Pursh. Fremont county. Fields and waste 

 places; common. 



E. corollata L. Ringgold, Taylor, Page, Fremont, and Pot- 

 tawattamie counties. Fields; common. 



E. heterophylla L. Decatur county. Bluffs; infrequent. 



E. cyparissias L. Decatur and Pottawattamie counties. 

 Waste places; infrequent. 



Acalyplia virginica L. Page and Fremont counties. Fields 

 and waste places; common. 



Urticace.e. 



Ulmus fxilva Mx. Union, Pottawattamie, Ringgold, Taylor, 

 Page, and Fremont counties. Woods; frequent. 



U. racemosa Thomas. Decatur county. An infrequent tree 

 along Grand river. 



U. americana L. Union, Adams, Montgomery, Pottawat- 

 tamie, Ringgold, Taylor, Page, and Fremont counties. Low 

 woods; common. 



Celtis occidentalls L. Union, Montgomery, Pottawattamie, 

 Ringgold, Page, and Fremont counties. Low woods; fre- 

 quent. 



Cannabis sativa L. Clarke, Union, Adams, Montgomery, 

 Pottawattamie, Ringgold, Taylor, Page, and Fremont counties. 

 Waste places; common. 



Humulus lupulus L. Union, Adams, Montgomery, Pottawat- 

 tamie, Ringgold, Taylor and Fremont- counties. Thickets; 

 common. 



