250 NORTH AMERICAN FLORA [Vomtmb 17 



111. Panicum Bicknellii Nash, Bull. Torrey Club 24: 193. 1897. 



Panicum nemopanthum Ashe, Jour. Elisha Mitchell Soc. 15: 42. 1898. 

 Panicum Bushii Nash, Bull. Torrey Club 26: 568. 1899. 



Vernal phase bluish- green; culms erect or ascending, 30-50 cm. high, glabrous, or the 

 lowermost portion puberulent; nodes sparsely bearded or glabrous; leaf -sheaths glabrous or 

 the lower sparsely villous especially above the nodes; blades stiffly ascending, or somewhat 

 spreading, elongate, 8-15 cm. long, 3-8 mm. wide, the uppermost usually longest, narrowed 

 toward the base, there usually ciliate with a few stiff hairs; panicles ovoid, 5-8 cm. long, about 

 two thirds as wide, the branches ascending, bearing few long-pediceled spikelets, these 2.3-2.8 

 mm. long, 1.1—1.2 mm. wide, oblong-elliptic, sparsely pubescent or rarely glabrous; first glume 

 about one third the length of the spikelet, subacute; second glume and sterile lemma equal, 

 covering the fruit at maturity; fruit 2 mm. long, 1.1 mm. wide, elliptic, subacute. 



Autumnal phase erect, branching from the middle nodes, forming a loose, bushy crown of 

 stiffly ascending blades not much reduced and overtopping the narrow, few-flowered panicles. 



Type locality: Bronx Park, New York. 

 Distribution: Connecticut to Georgia and Missouri. 



Illustrations: Contr. U. S. Nat. Herb. 15: /. 172; Britt. & Brown, 111. Fl. 3: App. /. 268c; 

 ed. 2. /. 333, 340. 



112. Panicum calliphyllum Ashe, Jour. Elisha Mitchell Soc. IS: 31. 



1898. 



Vernal phase yellowish-green; culms erect, 35-50 cm. high, glabrous, the nodes sparsely 

 villous; leaf-sheaths glabrous, or the lowermost sparingly pubescent, ciliate on the margin; 

 blades ascending, flat, 8-12 cm. long, 9-12 mm. wide, glabrous, ciliate at the rounded base; 

 panicles few-flowered, 7-9 cm. long, half as wide or less, with a few ascending branches; spike- 

 lets mostly long-pediceled, 2.9-3 mm. long, 1.2 mm. wide, elliptic, sparsely pubescent; first 

 glume about one third the length of the spikelet ; second glume and sterile lemma equaling the 

 fruit at maturity; fruit 2.3 mm. long,. 1.1 mm. wide, elliptic, subacute. 



Autumnal phase sparingly branching from the middle nodes, the branches about as long as 

 the internodes, erect; blades not greatly reduced; panicles narrow, partly included. 



Type locality: Watkins, New York. 

 Distribution: Massachusetts, New York, and Ohio. 

 Illustration: Contr. U. S. Nat. Herb. 15: /. 174. 



113. Panicum nudicaule Vasey, Bull. U. S. Dep. Agr. Bot. 8: 31. 



1889. 



Vernal culms erect from a somewhat spreading base, 40-60 cm. high, glabrous, the lower 

 internodes short, the two upper much elongate, thus producing the effect of a long, nearly 

 leafless stem; nodes glabrous, only the upper two visible; leaf-sheaths glabrous or the over- 

 lapping basal ones sometimes sparsely pubescent; ligule ciliate, less than 0.5 mm. long; blades 

 erect, rather thick, 4-10 cm. or some of the lower as much as 13 cm. long, 5-8 mm. wide (the 

 uppermost more or less reduced), nearly linear, abruptly pointed, slightly narrowed and some- 

 what enveloping the culm at base, glabrous; panicles long-exserted, 4^7 cm. long, hardly as 

 wide, few-flowered, the branches ascending ; spikelets 2.7-2.9 mm. long, 1-1.2 mm. wide, narrowly 

 ovate, acuminate, glabrous ; first glume one fourth to one third as long as the spikelet, usually 

 pointed; second glume and sterile lemma 7-nerved, exceeding the fruit and pointed beyond it; 

 fruit 2 mm. long, 1 mm. wide, elliptic, acute. 



Autumnal phase unknown. 



Type locality: Santa Rosa County, Florida. 



Distribution: Northern Florida and southern Alabama. 



Illustrations: Bull. U. S. Dep. Agr. Agrost. 17: /. 376; Contr. U. S. Nat. Herb. 15: /. 176. 



114. Panicum microcarpon MuhL; Ell. Bot. S. C. & Ga. 1: 127. 



1816. 



Panicum nitidum ramulosum Torr. Fl. U. S. 146. 1824. 

 ? Panicum nitidum barbatum Torr. Fl. U. S. 146. 1824. 



