324 OHIO BIOLOGICAL SURVEY 



stamens ; staminate spikelet with 6 stamens and a vestigial gynecium, 

 its glumes short-awned or awn-pointed ; spikelets between the stam- 

 inate and carpellate parts of the inflorescence more or less perfect, 

 with 6 stamens ; grain cylindrical, closely enveloped in the flower- 

 ing glumes. 



1. Zizania aquatica L. Wild Rice. A large annual grass with 

 an erect stem, 3-10 ft. high, broad flat leaves, and a large loose 

 panicle, the upper part carpellate with erect branches, the lower 

 staminate with ascending or spreading branches. Staminate spikelets 

 with acute awn-pointed glumes ; carpellate spikelets linear, the lem- 

 ma long-awned ; staminate spikelet with 6 stamens and a vestigial 

 ovulary; carpellate spikelet with 6 vestigial stamens. 



The grain was used by the Indians for food. In swamps, often in 

 rather deep water. July, Aug. Erie, Licking, Perry, Hocking. 



