PLANTS OF MANHATTAN AND BLUE ISLAND 83 



Ulmaceae. Elm Family. 



Ulmus americana L. White Elm. 



Woods. Common. Mar. 10 (11). 

 limits fulva Michx. Slippery or Red Elm. 



Woods. Common. Mar. 15 (14). 

 Cell is occidentalis L. Haekberry. 



Woods. Common. Apr. 10 (9). 



Moraceae. Mulberry Family. 



Morns rubra L. Red Mulberry. 



Woods. Frequent. May 5- 

 Toxylon pomijerum Raf. Osage Orange. 



Planted and sometimes escaped. Apr. 25. 

 Humulus Lupulns L. Hop. 



Woods and thickets. Common. Aug. 5. 

 Cannabis sativa L. Hemp. 



Manhattan. Occasional along roadsides. July 20 (21). 



Urticaceae. Nettle Family. 



Urtica gracilis Ait. Slender Nettle. 



Roadsides, thickets etc. Common. July 5. 

 Urticastrum divaricatum (L.) Kuntze. Wood Nettle. 



Woods. Common. July 10. 

 Adicea pumila (L.) Raf. Clearweed. 



Woods. Common. Aug. 5. 

 Boehmeria cylindrica (L.) Willd. False Nettle. 



Manhattan, eastward. Also the var. scabra Porter. 

 Parietaria pennsylvanica Muhl. Pellitory. 



Woods, hillsides, common. May 25 (25). 



Santalaceae. Sandalwood Family. 



Commandra pallida A. DC. 



Prairies and hillsides. Frequent. May 10 (10). 



Polygonaceae. Buckwheat Family. 



Rumex Acetosella L. Field Sorrel. Sorrel Dock. 



Fields and roadsides. Occasional. May 5. 

 Rumex venosus Pursh. 



Manhattan. Occasional in sandy soil. May 10. 

 Rumex altissimus Wood. Tall Dock. 



Roadsides, etc. Common. May 5 (4). 



