IOWA ACADEMY OF SCIENCES. 
195 
Fagopyrum esculentum Moench. Page and Pottawattamie 
counties. Waste places; frequent. 
F. tataricum (L.) Gaertn. Decatur county. Waste places; 
one specimen found. 
Aristolochiace^. 
Asarum rejiexum 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^. 
Gommandra umbellata Nutt. Page county. 
Euphorbiace^. 
Euphorbia 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. heteropliylla L. Decatur county. Bluffs; infrequent. 
E. cyparissias L. Decatur and Pottawattamie counties. 
Waste places; infrequent. 
Acalypha virginica-lj. Page and Fremont counties. Fields 
and waste places; common. 
Urticace^; 
Ulmus fulva 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 occidentalis 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. 
