

124 GRAMINEAE. 



33. Panicum flexile (Gattinger) Scribn. Wiry Panicum. (Fig. 275.) 



Panicum capillare \tt. flexile Gattinger, Tenn. Fl. 

 1887. 



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



Culms erect, S'-iS' tall, slender, simple or 

 somewhat branched at base, bearded at the nodes. 

 Sheaths papillose-hirsute; leaves 4 X -9 X long, 2 "-3" 

 wide, erect, long-acuminate, more or less pubes- 

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

 in outline, its branches ascending, the lower oues 

 2'-$%' long; spikelets \W long, much shorter than 

 the pedicels, acuminate; first scale about one-fourth 

 as long as the spikelet ; second and third scales 

 about equal, 5-7 nerved; fourth scale elliptic, some- 

 what shorter than the third. 



In moist or dry soil, Pennsylvania to Tennessee and 

 Missouri. Aug. -Oct. 



Panicum autumnale Bosc. Diffuse Panicum. (Fig. 276.) 



Panicum nudum Walt. Fl. Car. 73. 1788? 

 Panicum dirergens Muhl. Gram. 120. 1817. Not 



H.B.K. 1815. 

 Panicum autumnale Bosc; Spreng. Syst. i: 320. 1825. 



Culms erect or decumbent, i-2 tall, generally 

 much branched at the base, slender. Sheaths 

 shorter than the internodes, the upper glabrous, 

 the lower sometimes densely pubescent ; leaves 

 \yt'-^' long, i"-3" wide, ascending, acuminate, 

 glabrous ; panicle s'-ia' long, bearded in the axils, 

 the lower branches 4 r -8' long, at first erect with 

 the lower portion included in the upper sheath, 

 finally exserted and widely spreading at maturity ; 

 spikelets lanceolate, about \Y?." long, acuminate, 

 glabrous or pubescent, on capillary pedicels of 

 many times their length ; first scale minute ; sec- 

 ond and third equal, acute, glabrous or sometimes 

 villous, the fourth lanceolate, \]^" long. 



In dry soil, Illinois to Georgia and Florida, west 

 to Minnesota, Kansas and Arizona. July-Sept. 



35. Panicum minus (Muhl.) Nash. Wood Panicum. (Fig. 277.) 



Panicum capillare var. minor Muhl. Gram. 124. 

 Panicum capillare var. sylraticum Torr. Fl. 149. 



Not P. sylraticum Lain. 1797. 

 Panic n in diffusum Pursh, Fl. Am. Sept. i: 68. 



Not Sw. 1788. 

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



Culms erect, or occasionally decumbent, S'-2 

 long, slender, somewhat branched at base. Sheaths 

 hirsute ; leaves 2 / ~4 / long, i // -3 // wide, erect, more 

 or less pubescent ; panicle 4 / -o/ long, its lower 

 branches 3'-$' long, spreading or ascending; 

 spikelets about }" long, elliptic, acute, smooth, 

 borne in pairs at the extremities of the ultimate 

 divisions of the panicle; first scale about one-third 

 as long as the equal acute second and third ones, 

 the fourth somewhat shorter than the third. 



In dry woods and thickets, New Bnmswick to 

 Georgia, west to Missouri. Aug. -Sept. 



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