Voi,^ III.] 



[Vol. I: p. 1 18.] 17a. 



Panicum scoparium Lam. var. Liebere;ii \'asey, 

 U. S. Dept. Agric. Div. Bot. 8: 32. '1SS9. 



Pauiciim Liebergii Scribn. ; Vasey, Bull. V . S. Dept. 

 Agric. Div. Bot. 8: 32. As synonym. iS8g. 



Culms erect, slender, glabrous, roughish, espe- 

 cially near the nodes, i°-2° tall, at length branched. 

 Sheaths papillose-hirsute with spreading hairs, usu- 

 ally longer than the internodes; ligule a short 

 scarious ciliolate ring; leaves erect or ascending,- 

 lanceolate, 2'-^' long, 3"-6" wide, acuminate at 

 the apex, rounded at the partly clasping base, 

 papillose-hispid beneath and sometimes sparingly 

 so on the rough upper surface; panicle oblong, 

 2'-4' long, its branches erect or ascending; spike- 

 lets iy2"-2" long, oval, the outer three scales pap- 

 illose-hirsute with long spreading hairs, the first 

 scale'about one-half as long as the spikelet, ovate, 

 acute. 1-3-nerved, the second and third scales 

 broadly oval when spread out, 7-9-nerved. 



Dry soil. Ohio'to Minnesota and South Dakota, south 

 to Missouri and Nebraska. June-July. 



APPENDIX. 



Panicum Liebergii (Vasey) Scribn. 

 Panicum. (Fig. 259a.) 



Bull. 



497 



lyieberg's 



[Vol. i: p. 120.] 2ia. Panicum Brittoni 



Nash. Britton's Panicum. (Fig. 263a.) 



Panicum Brittoni Nash, Bull. Torr. Club, 24: 194. 1897. 



Smooth and glabrous. Culms coarsely striate, 7!ot 



branched, tufted, slender, erect, rigid, 4'-S' tall; sheaths 



less than one-half as long as the internodes; ligule a ring 



of short hairs; leaves longer than the sheaths, those ou 



the culm three in number, the middle one the longest, 



yi'-iK' long, }("-!%" wide, erect, acuminate, 5-7- 



nerved; panicle ^'-1%' long, its branches spreading or 



ascending; spikelets one-half as long as the pedicels, or 



less, obovoid, obtuse, _?+'" long, the first scale one-third 



as long as the spikelet, the second and third scales 7- 



nerved, densely pubescent with spreading hairs. 



Moist sand in the pine barrens of southern New Jersey. 

 May-June. 



[Vol. I: p. 120.] 22a. Panicum 



Nashianum Scribn. Nash's Panicum. 



(Fig. 264a.) 



Panicum Nashianum Scribn. Bull. U. S. Dept. 

 c .\gric. Div. Agrost. 7: 79. 1897. 



Culms tufted, glabrous or puberulent, slender, 

 6'-i5' tall, at length much branched. Sheaths 

 glabrous, or the lower pubescent, the primary 

 about one-third as long as the internodes, those 

 on the branches overlapping; ligule a short 

 scarious ring; leaves erect or ascending, lanceo- 

 late, acuminate, smooth and glabrous, ciliate, at 

 least at the base, '^i'-i' long, l"-2)^" wide, the 

 leaves of the branches smaller; primary panicle 

 i'-2'long, the branches widely spreading; spike- 

 letsabout \" long, obovate, the first scale i- 

 nerved, the second and third scales y-nerved, 

 densely pubescent with short spreading hairs. 



Pine lands, Virginia to Florida. March-July. 



32 



