GRASS FAMILY. iaq 



i. HomalocenchrusVirginicus(Willd.)Britton. White Gnu*. (Fig. 287.) 



;ia I '//;;-/ m'ca Willd. Sp. PI. 1:325. 1797. 

 ./v/>/r//a Virginica R. & S. Syst. 2: 266. 1817. 

 }lonHiloccnchi-ns Virginicus Britton, Trans. N Y 

 Acad. Sci. 9: 14. 1889. 



Culms glabrous, decumbent, i-3 long, much 

 branched, slender, smooth. Sheaths usually 

 shorter than the internodes; ligule short; leaves 

 2 / -6 / long, -1"-%" wide, acute, usually narrowed 

 toward the base, scabrous; terminal panicle finally 

 lon^-exserted, 3 / -8 / long, its branches generally 

 spreading, usually naked below the middle; lateral 

 panicles smaller and usually included; spikelets 

 i ^"-i-W long, about y 2 " wide, oblong, appressed; 

 outer scale hispid on the keel and margins; inner 

 scale hispid on the keel; stamens i or 2. 



Swamps or wet woods, Maine to Ontario and Minne- 

 sota, south to Florida, Kansas and Texas. Aug.-S.-pt. 



2. Homalocenchrus oryzoides (L.) Poll. Rice Cut-grass. . s.) 



Phalaris oryzoides I,. Sp. PI. 55. 



ffomalocencArusoryzotdesl'oli.HiM I'l 1'. il.it i ij. 177$. 

 Leersia oryzoides Sw. Kl. Ind. Oi. 1797. 



Culms glabrous, decumbent, i Q -4 long, much 

 branched, rather stout, smooth. Sheaths shorter 

 than the internodes, very rough; ligule very short; 

 leaves 3'-io' long, 2 // -5 // wide, acute, narrowed to- 

 ward the base, scabrous ; terminal panicle s'-o 7 long. 

 finally long-exserted, its branches lax, naked at the 

 base, at first erect, later more or less widely spreading ; 

 lateral panicles generally included; spike lets a"-!^" 

 long, about &" wide, elliptic; scales pubescent, the 

 outer one hispid on the keel and on the margins; inner 

 scale much narrower, hispid on the keel; stamens 3; 

 anthers yellow. 



In swamps and along stream- '; ;i forming 

 tangled masses, Nova Scotia t \\i-u m i >:it..v ..uth lo 

 Florida, Kansas and Texas. Al><> in the trmpcratc 

 of Europe and Asia. Aug. -Sept. 



3. Homalocenchrus lenticularis (Michx.) 

 Scribn. Catch-fly Grass. (Fig. 289.) 



lenticularis Michx. Fl. Bor. Am. i: 39. 1803. 

 Homalocenchrus lenticularis Scribn. Mem. Torr. Club, 5: 



33- 1894- 



Culms glabrous, erect, 2-4 tall, usually simple, 

 smooth. Sheaths shorter than the internodes, scab- 

 rous; ligule very short; leaves 4^-12' long, 4 // -io // 

 wide, acute, more or less narrowed at the base, scab- 

 rous; panicle 4}4 / -<) / long, finally exserted, its branches 

 lax, naked below, at first erect, later spreading; 

 spikelets much imbricated, 2 // -2^ // long, i // -i / 3< // 

 wide, broadly oval; scales smooth or sparingly hispid- 

 scabrous, the outer one strongly 3-nerved, hispid on the 

 keel and margins, the inner much narrower, strongly 

 i-nerved, hispid on the keel ; stamens 2. 



Wet grounds, Virginia to Illinois and Missouri, south 

 t<> Florida and Texas. July-Sept. 



