248 NORTH AMERICAN FLORA [Volume 17 



105. Panicum consanguineum Kunth, Riv. Gram. 36. 1829. 



Panicum villosum EH. Bot. S. C. & Ga. 1: 124. 1816. Not P. villosum Lam. 1791. 

 Panicum commutatum consanguineum Beal, Grasses N. Am. 2: 141. 1896. 

 Panicum georgianum Ashe, Jour. Elisha Mitchell Soc. 15: 36. 1898. 

 Panicum cahoonianum Ashe, Jour. EHsha Mitchell Soc. 15: 113. 1899. 



Vernal phase with culms ascending or spreading, often geniculate at base, 20-55 cm. high, 

 rather stout, densely felty- villous below, less so above, the nodes bearded; leaf-sheaths villous, 

 the upper often sparsely so; blades erect or ascending, 7-1 1 cm. long, 5-8 mm. wide (the lower- 

 most shorter and broader), tapering slightly toward the base, more or less involute-pointed, 

 villous on both surfaces or nearly glabrous above, the longitudinal wrinkling conspicuous in the 

 lower blades; panicles 4-8 cm. long, one half to two thirds as wide, the lower branches usually 

 narrowly ascending; spikelets 2.6-2.8 mm. long, 1.6-1.8 mm. wide, obovate, blunt, turgid; 

 first glume one third the length of the spikelet or less ; second glume and sterile lemma equal, 

 scarcely covering the fruit at maturity, densely papillose- villous, the bullate papillae prominent; 

 fruit 2 mm. long, 1.5-1.7 mm. wide, minutely puberulent at the apex. 



Autumnal phase spreading or decumbent, the numerous branches somewhat flabellately 



fascicled, the blades mostly 3-4 cm. long, 2-3 mm. wide, flat, thin, and papery. 



Typ^ locality: South Carolina. 



Distribution: Virginia to Florida and west to eastern Texas. 



Illustrations: Contr. U. S. Nat. Herb. 15: /. 160; Britt. & Brown, 111. Fl. ed. 2./. 339. 



106. Panicum angustifolium Ell. Bot. S. C. & Ga. 1: 129. 1816. 



? Panicum ramulosum Michx. Fl. Bor. Am. 1: 50. 1803. 



Panicum Curtisii Steud. Syn. Gram. 66. 1854. 



Chasea angustifolia Nieuwl. Am. Midi. Nat. 2: 64. 1911. 



Vernal phase with erect or nearly erect culms 30-55 cm. high, the lowermost intern odes 

 gray crisp-villous, the middle and upper glabrous; nodes glabrous or the lower villous, not 



bearded ; lower leaf -sheaths more or less appressed- villous, the upper glabrous, except the usu- 

 ally ciliate margin; blades 8-12 cm., rarely 15 cm. long, 4-8 mm. wide (lowermost blades shorter 

 and broader and longitudinally wrinkled), stiffly ascending, the upper more appressed, long- 

 acuminate, scarcely narrowed at base; panicles long-exserted, 4— 10 cm. long, nearly as wide, 

 loosely flowered, the branches at anthesis widely spreading, the lower 3-4 cm. long, often re- 

 flexed; spikelets 2.5-2.8 mm. long, 1.4—1.6 mm. wide, elliptic-obovate, turgid; first glume about 

 one third the length of the spikelet, pointed or obtuse; second glume and sterile lemma equal, 

 covering the fruit at maturity, not beaked beyond it, papillose-villous ; fruit 2 mm. long, 1.3-1.5 

 mm. wide, broadly elliptic, minutely puberulent at the obscurely umbonate apex. 



Autumnal culms stiffly ascending or somewhat topheavy-reclining, not spreading nor 

 mat-like; blades very numerous, flat, appressed, rather thin and papery; panicles reduced (the 

 later ones often to two or three spikelets), overtopped by the leaves; spikelets commonly more 

 turgid and blunt than those of the primary panicles. 



Type locality: South Carolina. 



Distribution: Pennsylvania to Florida, and west to eastern Texas. 



Illustrations: Contr. U. S. Nat. Herb. 15: /. 162; Britt. & Brown, 111. Fl./. 269; ed. 2./. 337. 



107. Panicum fusiforme Hitchc. Contr. U. S. Nat. Herb. 



12: 222. 1909. 



Panicum neuranthum ramosum Griseb. Cat. PL Cub. 232. 1866. Not. P. ramosum L,. 1767. 



Vernal phase similar to that of P. angustifolium; culms 30-70 cm. high, the basal and lower 

 blades narrower and at least the lowermost softly pubescent beneath, the longitudinal wrinkles 

 obscure, the leaves more or less clustered toward the base of the culms, the panicles thus long- 

 exserted; spikelets 3.3-3.5 mm. long, 1.4—1.5 mm. wide, elliptic, long-attenuate at base; first 

 glume two fifths the length of the spikelet, usually obtuse; second glume and sterile lemma ex- 

 ceeding fruit and somewhat beaked beyond it at maturity, pubescence as in P. angustifolium; 

 fruit 2.5 mm. long, 1.4-1.5 mm. wide, broadly elliptic, obscurely puberulent at subacute apex. 



Autumnal culms erect or reclining, under favorable conditions forming dense,jbushy clusters 



30-60 cm. in height; blades soon involute, 3-5 cm. long; spikelets more turgid than those of the 



primary panicles, 3.5-3.8 mm. long, more pointed; fruit more turgid. 



Type locality: Western Cuba. 



Distribution: Georgia to Florida and Mississippi; Cuba; Jamaica. 



Illustration: Contr. U. S. Nat. Herb. 15: /. 164. 



