Vol.. III.] 



APPENDIX. 



497 



[Vol. i: p. 118.] 17a. Panicum Liebergii (Vasey) Scribn. Lieberg's 



Panicum. (Fig. 259a.) 



Panicum scoparium Lam. var. Liebergii Vasey, Bull. 



U. S. Dept. Agric. Div. Bot. 8: 32. 1889. 

 Panicum Liebergii Scribn.; Vasey, Bull. U. S. Dept. 



Agric. Div. Bot. 8: 32. As synonym. 1889. 



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 / -4 / 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 iyi f/ -2 f/ 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. 



[Vol. 1: p. 120.] 21a. Panicum Brittoni 

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



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



Smooth and glabrous. Culms coarsely striate, not 



branched, tufted, slender, erect, rigid, 4 / -8 / tall; sheaths 



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



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



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



yi'-i^i' long, 3^ // -i^ // wide, erect, acuminate, 5-7- 



uerved; panicle ^ , -i% / long, its branches spreading or 



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



less, obovoid, obtuse, i{ /f long, the first scale one-third 



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



uerved, densely pubescent with spreading hairs. 



Moist sand in the pine barrens of southern New Jersey. 

 May-June. 



I? 



[Vol. 1: p. 120.] 22a. Panicum 



Nashianum Scribn. Nash's Panicum. 



(Fig. 264a.) 



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



Agric. 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, %'-2.' l u g> i // -2>^ // wide, the 

 leaves of the branches smaller; primary panicle 

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

 lets about i // long, obovate, the first scale 1- 

 nerved, the second and third scales 7-nerved, 

 densely pubescent zvith short spreading hairs. 



PineMands, Virginia to Florida. March-July. 



32 



