114 GRAMINEAE. 
3. Panicum digitarioides Carpenter. Narrow Panicum. (Fig. 245.) 
Panicum carinatum Torr. Bost. Journ. Nat. Hist. 1: 
137. 1835. Not Presl, 1830. 
Panicum digitarioides Carpenter; Steud. Syn. Pl. 
Gram. 75. 1855. 
Panicum Curtisit Chapm, Fl. S. States, 573. 1860. 
Not Steud. 1855. 
Glabrous, culms erect from a long and stout 
creeping rootstock, 3°-5° tall, simple, stout, 
smooth, Sheaths smooth ; leavés 4’/—10’ long, 4//— 
8’’ wide, long-acuminate; panicle linear, 6/-12/ 
long, its branches 1/—3/ long, erect ; spikelets about 
144’ long, ovate, acute; first scale about one-half as 
long as the spikelet, acute, 3-nerved; second about 
1’ long, 5-nerved and a little exceeded by the 
3-nerved third one; the fourth 3-nerved, slightly 
shorter than the third. 
In water, Delaware to Floridaand Texas. July—Aug. 
4. Panicum obtusum H.B.K. Blunt Panicum. (Fig. 246.) 
Panicum obtusum H.B.K. Nov. Gen. 1: 98. 1815. 
Glabrous, culms erect, 1°-2° tall, simple or 
branching at base, smooth. Sheaths smooth ; 
leaves 2%4’-9’ long, 1//-3/’ wide, usually erect, 
long-acuminate; panicle linear, 2-6’ long; branches 
3{/-114’ long, appressed; spikelets about 1'’/ 
long, crowded, oval or obovoid, obtuse, turgid ; 
first scale shorter than the rest, obtuse, 5-nerved; 
second, third and fourth scales about equal, the 
second and third 5-nerved, the fourth chartaceous. 
Kansas to Arizona, south to Texas and Mexico. 
July—Sept. 
5. Panicum hians Ell. Gaping Panicum. 
(Fig. 247.) 
Panicum divaricatum Michx. Fl. Bor. Am. i: 50. 1803. 
NotI, 1758. 
Panicum melicarium Michx. Fl. Bor. Am. 1: 50. 1803? 
Panicum hians Ell. Bot. S. C. & Ga. 1: 118. 1817. 
Glabrous, culms erect, 1°-234° tall, generally simple, 
sometimes creeping at base, smooth. Leaves 3/—5’ long, 
1//-3// wide, acuminate, generally erect; panicle 3/-S’ 
long; branches few, generally spreading, the longer ones 
often drooping, the lower naked below the middle ; spike- 
lets about 1’’ long; fourth scale exceeded by the third 
and its usually empty palet which is much enlarged, 
generally forcing the spikelet wide open. 
In moist ground, North Carolina to Missouri, south to 
Florida and Texas. Aug.—Sept. 
