140 



GRAMINEAE. 



Vol. I. 



8. Panicum philadelphicum Bernh. Wood Witch-grass. Fig. 318. 



Panicum capillar e var. minor Muhl. Gram. 124. 181 7. 

 Panicum capillar e var. sylvaticum Torr. Fl. 149. 1824. 



Not P. sylvaticum Lam. 1797. 

 Panicum diffusum Pursh, Fl. Am. Sept. 1: 68. 1814. 



Not Sw. 1788. 

 Panicum minus Nash, Bull. Torr. Club, 22 : 421. 1895. 

 Panicum philadelphicum Bernh. ; Trin. Gram. Pan, 216. 



1826. 



Culms erect, or occasionally decumbent, 8'-2° long, 

 slender, often branched at base. Sheaths hirsute; 

 blades 2'-^' long, i"-s" wide, erect, more or less 

 pubescent; panicle 4'-c/ long, its lower branches $'-4' 

 long, spreading or ascending; spikelets about 1" long, 

 elliptic, acute, smooth, borne commonly in pairs at 

 the extremities of the ultimate divergent divisions of 

 the panicle; first scale about one-third as long as the 

 equal acute second and third ones, which barely 

 exceed the fourth. 



In dry woods and thickets, New Brunswick to Wis- 

 consin, Georgia, Texas and Oklahoma. Aug.-Sept. 



9. Panicum flexile (Gattinger) Scribn. Wiry Witch-grass. Fig. 319. 



Panicum capillare var. flexile Gattinger, Tenn. Fl. 94. 

 1887. 



Panicum flexile Scribn. Bull. Torr. Club, 20: 476. 1893. 



Culms erect, 6'-2° tall, rather stiff, slender, simple 

 or somewhat branched at base, bearded at the nodes. 

 Sheaths papillose-hispid; blades 4'-o/ long, 2"-3" 

 wide, erect, long-acuminate, pubescent or almost gla- 

 brous ; panicle 4'-o/ long, narrowly ovoid to oblong 

 in outline, its branches ascending, the lower ones 

 z'-yk' long; spikelets ii"-i|" long, single on the 

 ultimate divisions of the panicle, acuminate ; first 

 scale one-fourth to one-half as long as the spikelet; 

 second and third scales about equal, 5-7-nerved, 

 about one-third longer than the fourth scale. 



In moist or dry soil, Ontario to South Dakota, south to 

 Florida and Texas. Aug.-Oct. 



10. Panicum miliaceum L. 



Millet. Broom-corn Millet. Hirse-grass. Brown 

 Millet. Fig. 320. 



Panicum miliaceum L. Sp. PI. 58. 1753. 



Culms erect or decumbent, rather stout, 1° or more 

 tall, glabrous or hirsute. Sheaths papillose-hispid; 

 blades s'-io' long, J'-i' wide, more or less pubescent; 

 panicle rather dense, 4'-io' long; branches erect or 

 ascending; spikelets 2"-2i" long, acuminate; first scale 

 about two-thirds as long as the spikelet, acuminate, 

 5-7-nerved; second scale z"-2.Y' long, acuminate, 13- 

 nerved, somewhat exceeding the 7-13-nerved acuminate 

 third one, which subtends an empty palet; fourth scale 

 shorter than the third, becoming indurated, obtuse. 



In waste places, Maine to Florida, Michigan and Cali- 

 fornia. Adventive from the Old World. July-Sept. 



