COMMON THREE SQUARE 

 (Scirpus americanus) 



Fresh, brackish and alkali 

 marshes—usually in sandy soil- 

 inland and along each coast from 

 Alaska to Newfoundland, California, 

 Texas and Florida. 



Stems knee-high to as tall 

 as a man. 



Resembles Olney Threesquare 

 but the stems have a long, sharp 

 point and only slightly concave 

 sides, and the spikelets are 

 sharp-pointed. Resembles Torrey 

 Threesquare but the stems have a 

 sharp point and the spikelets 

 are reddish-brown to dark- 

 purplish -brown. 



OLNEY THREESQUARE 

 (Scirpus olneyi) 



Brackish marshes—usually in peaty 

 soil — along the California and Atlantic 

 coasts; alkali marshes from Washington to 

 Wyoming, California and Texas; and in a 

 few places in Michigan, Ohio and Missouri. 



Stems knee-high to taller than a man. 



Resembles Common Threesquare but the 

 stems have a short, blunt point and deeply 

 concave sides. 



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