148 



GRAMINEAE. 



Vol. I. 



32. Panicum polyanthes Schultes. Small- 

 fruited Panic-grass. Fig. 342. 



Panicum polyanthes Schultes, Mant. 2 : 257. 1824. 

 Panicum microcarpon Muhl. Gram, m, June, 1817. Not 

 Ell. Jan. 181 7. 



Culms generally erect, 2°-3° tall, simple, smooth. 

 Sheaths smooth, glabrous, longer than the internodes; 

 ligule none; blades s'-8' long, i'-i' wide, long-acumi- 

 nate, smooth, cordate-clasping and sparingly ciliate at 

 the base; panicle 3'S' long, elliptic, longer than broad; 

 branches slender, ascending; spikelets i" long, obovoid 

 to nearly spherical, numerous; first scale minute, 

 second and third about equal, 7-nerved, puberulent, the 

 fourth white and shining; palet of third scale usually 

 empty. 



Woods and along thickets, southern New York to Okla- 

 homa, south to Georgia and Texas. July-Sept. 



33. Panicum ensifolium Baldw. Small-leaved 

 Panic-grass. Fig. 343. 



Panicum ensifolium Baldw.; Ell. Bot. S. C. & Ga. 1 : 126. 1817. 



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



Smooth and glabrous. Culms coarsely striate, finally 

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

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

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

 the culm up to ii' long, the basal longer, J"-ii" wide, erect, 

 acuminate, 5-7-nerved; panicle l'-i'i' long, its branches 

 spreading or ascending; spikelets one-half as long as the 

 pedicels, or less, obovoid, obtuse, I" 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, southern New Jersey to 

 Florida and Mississippi. May-July. 



34. Panicum tenue Muhl. White-edged Panic- 

 grass. Fig. 344. 



Panicum tenue Muhl. Gram. 118. 181 7. 



P. albomarginatum Nash, Bull. Torr, Club, 24: 40. 1897. 



Glabrous, excepting the spikelets. Culms densely 

 tufted, 8'-i6' tall, finally branched toward the base, the 

 upper part of the culm naked ; leaves usually 2 ; sheaths 

 much shorter than the internodes; blades erect, thick, 

 stiff, lanceolate, with a prominent white thick margin, 

 usually ii' long or less, rarely longer, i"-3i" wide; 

 panicle l'-il' long, broadly ovate, open; spikelets ellip- 

 tic, less than I" long and about i as wide, pubescent 

 with short spreading hairs. 



In pine lands, Dismal Swamp, Virginia, to Florida and 

 Louisiana ; also in Cuba. June and July. 



