178 



PAXICACK.E. 



Spikelets lanceolato-oblong, 3.5 mm. long, loosely imbricate. . 4 

 Spikelets semiovate. 1.5 mm. long 5 



1. H. Virginicug(\Villd.) Hritton, Trans. N. Y. Acad. Sci. 9: 14 

 [reprint 13] (1889). White Rice. Lccrsia Viifjinica Willd. Sp. 

 PI. 1 : 325 (1797). 



L. Viryinica Michx. Fl. Bor. Am. 1 : 37 (1S03). 



Asprella Vinjinica K. & S. 8vst. 2:2G0 (1817). 



Culms 40-70 cm. high, often nearly smooth, liootstocks 5 n»m. 

 diam., covered with closely imbricated scales. Loal'-blades 5-13 

 cm. long. Spikelets linear-oblong, 3 nun. long, scarcely imbri- 

 cate, in slender simple j)anicles, the compressed floral glume curv- 

 ing to one side, becoming concave next to the axis, to wiiich it is 

 closely apprcssed; lloral glume and palea ciliate. Stamens 2. 



Michigan, Cooleii. Clark 680, Beal 27, 28; North Carolina, 

 Mc('((rf/n/; Minnesota, HolziiKjer 12; South Dakota, l^nffcy; 

 Texas, Reverchon 103fi. 



Wet woods, Canada to Florida and westward. 



2. H. oryzoides (L.) Mieg, Toll. Hist. PI. Palat. 1:52(1770). 

 Rice-cut Grass. Kick's Col si .v. 



Plidhivis orj/zoitfrs L. Sp. PI. 

 5r) (IToo). Klirluirtid rldiKh'sfina 

 Wigg. Fl. liolsat. (JKo (17S0). As- 

 prvUa o>'i/zoi(/('s Lam. 111. 1 : 1(;7 

 (1791). LcerKtd oi\i/xt>it/rs ^\\. Fl. 

 I lid. Occ. 1:21 (17;»7). Ori/za 

 cJdiidesiiiia A. Br. Asch. Fl. Brand. 

 7'JO (18<;4). 



Culms 00-150 cm. Iiigli. Hoot- 

 stocks narrow, with internodes 2-3 

 cm. long. Leaf-blades l."»-'>0 cm. 

 long, 10-25 mm. wide, supplied 

 with stout recurved prickles. Panicles 15-20 cm. long, with cal- 

 lous glands inside the base of the rays. Spikelets oval, flat, some- 

 what ciliate, 5 mm. long. Stamens 3. 



Kio. 37. — FTomalocenchrus orf/Mt'des. 

 A, spikelet; a, Hoiet. (Scril)iu'r.) 



