106 I hi: AMERICAN MIDLAND NATURAL! I 



Euphorbia keterophylla I,. Painted Leaf. 



Roadsides and edges of woods. Frequent. July i.s. 

 Euphorbia missouriensis ( Norton) Small. 



Hillsides and thickets. Common. May 25 (24). 



Anacardiaceae. Sumac Family. 

 Rhus glabra L. Scarlet Sumac. 



Hillsides. Common. June 20 (18). 

 Rhus aromatica Ait. 



Hillsides. Frequent. Apr. 20 (18). 

 Rhus r ad i cans L. Poison Ivy. 



Woods, thickets or open roadsides: high climbing, creep- 

 ing or somewhat upright. Common. May 30. 



Celastraceae. Stall" Tree Family. 

 Euonymus atropurpureus Jacq. Wahoo. 



Woods. Frequent. June 5 (5). 

 Celastrus scandens L. Bittersweet. 



Woods, wooded ravines, etc. Common. May 30 (27). 

 Staphyleaceae. Bladder Nut Family, 

 Staphylea trijolia L. Bladder Nut. 



Wooded ravines. Occasional. Apr. 25 (25). 

 Aceraceae. Maple Family. 

 Acer saccharinum L. Soft or Silver Maple. 



Woods. Common. Feb. 25 (26). 

 Acer Negundo L. Box Elder. 

 Woods. Common. Apr. 5 (2). 



Hippocastanaceae. Buckeye Family. 

 Aesculus arguta Buckl. Western Buckeye. 



Manhattan. Frequent in wooded ravines. Not seen in 

 the area covered at Blue Rapids although seen within a few 

 miles. Apr. 20 (22). 



Balsaminaceae. Touch-me-not Family. 

 Impatiens aurea Muhl. Pale Touch-me-not. 

 Woods. Common. July 20. 



Rhamnaceae. Buckthorn Family. 

 Rhamnus lanceolata Pursh. Lance-leaved Buckthorn. 

 Hillsides. Frequent. May 5. 

 onothus ovatus Desf. Red Root. 

 Prairies and hillsides. Common. Apr. 30 (28). 



