77 



Fig. 55. Iiimnodea arkansana (Nutt.) Dewey.— a, A spikelet; b, the flower- 

 ing glume and palea; c, a spikelet of Limnodea arkansana var. pilosa. 



55. LIMNODEA Dewey in Contr. U. S. Nat. Herb. 2 : 518. 1894. {Thurberia 

 Benth.; Greenia Nutt., not W. & A.) Spikelets 1-flowered, hermaphrodite. 

 Empty glumes 2, rather rigid, subequal,awnless; the flowering glumes a little 

 shorter than the empty ones, 2-cleft, or 2-toothed at the apex, awned between 

 the teeth; awns slender, geniculate, flexuous' or somewhat twisted toward the 

 base. Palea a little shorter than the flowering glume, hyaline. Stamens 3. 

 Styles short, distinct; stigmas shortly plumose. Grain narrow, oblong, included 

 within the rigid fruiting glume, free. Slender, caespitose, erect grasses, often 

 decumbent at the base, with narrow, flat leaves and slender, terminal panicles; 

 spikelets few or many, smooth or pubescent. 



Species 2, North America in the Southwestern States. 



