GRASS FAMILY. 129 
1. Homalocenchrus Virginicus ( Willd. ) Britton. White Grass. (Fig. 287.) 
Leersia Virginica Willd. Sp. Pl. 1: 325. 1797. 
Asprella Virginica R. & S. Syst. 2: 266. 1817. 
Homalocenchrus Virginicus Britton, Trans. N. Y. 
Acad. Sci. 9: 14: 1889. 
Culms glabrous, decumbent, 1°-3° long, much 
branched, slender, smooth. Sheaths usually 
shorter than the internodes; ligule short; leaves 
2/-6’ long, 1/’-8’’ wide, acute, usually narrowed 
toward the base, scabrous; terminal panicle finally 
long-exserted, 3/—S’ long, its branches generally 
spreading, usually naked below the middle; lateral 
panicles smaller and usually included; spikelets 
1(’/-1'%4”’ long, about %4’’ 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.—Sept. 
2. Homalocenchrus oryzoides (1,.) Poll. Rice Cut-grass. (Fig. 288.) 
Phalaris oryzotdes Y,. Sp. Pl. 55. _1753- 
Homalocenchrus oryzotdes Poll. Hist. Pl. Palat. 1:52. 1776. 
Leersia oryzoides Sw. Fl. Ind. Oce. 1: 132. 1797. 
Culms glabrous, decumbent, 1°-4° long, much 
branched, rather stout, smooth. Sheaths shorter 
than the internodes, very rough; ligule very short; 
leaves 3/—10’ long, 2/’-5’’ wide, acute, narrowed to- 
ward the base, scabrous ; terminal panicle 5/—9/ long, 
finally long-exserted, its branches lax, naked at the 
base, at first erect, later more or less widely spreading ; 
lateral panicles generally included; spikelets 2//-2%4’’ 
long, about 3/’’ 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 streams, often forming dense 
tangled masses, Nova Scotia to western Ontario, south to 
Florida, Kansas and Texas. Also in the temperate parts 
of Europe and Asia. Aug.—Sept. 
3. Homalocenchrus lenticularis (Michx.) 
Scribn. Catch-fly Grass. (Fig. 2809. ) 
Leersia lenticularts Michx. F1. Bor. Am. 1: 39. 1803. 
Homalocenchrus lenticularts Seribn, 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//—10’’ 
wide, acute, more or less narrowed at the base, scab- 
rous; panicle 414’-9’ long, finally exserted, its branches 
lax, naked below, at first erect, later spreading; 
spikelets much imbricated, 2/’-24%4’’ long, 1//-134// 
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 
1-nerved, hispid on the keel; stamens 2. 
. 
Wet grounds, Virginia to Illinois and Missouri, south 
to Florida and Texas. July-—Sept. 
C, 
