PANICEiE. 97 



Virgiiiiii to Florida, Arkansas to Texas. 



Var. glabratum Eugelni. 



Leaves smooth; spikes 5-7 > rachis 1-1.5 mm. wide; spikelets 

 4 mm. long. 



Louisiana. 



23. (3). Anth^nantia Beauv. Agrost. 48, t. 10, f. 7 (1812). 

 Anthenantia E. Br. Fliucl. Voy. 2 : App. (III.) 582 (1814). 

 Atdaxanthus Ell. Bot. S. 0. and Ga. 1 : 102 (1816). Aulaxia 

 Nutt. Gen. 1 : 47 (1818). Leptocorypldum Noes, Agrost. Bras. 

 83 (1824). 



Spikelets jointed with the apex of the pedicels, oval, sometimes 

 acute, racemose or slender, erect, branches of a loose contracted 

 panicle containing 1 perfect terminal flower and 1 staminate or 

 neuter. Empty glumes nearly equal, membranous, liairy, as long 

 as the florets or longer ; fertile floret membranous when young, 

 becoming firmer with age, the apex soft. Stamens 3. Styles 

 distinct. Grain enclosed, but not adherent. 



The genus is closely related to Panicum, but lacks the small 

 lowest glume of that genus. 



There are 3 species, 2 of which are found in North America, 

 the other in South America. 



1. A. rufa (Ell.) Schult. Mant. 2 : 258 (1824). Atilaxantlius 

 rnfvs Ell. 1. c. Paniaim rufum Kunth, Eev. Gram. 1 : 35 

 (1829). 



A slender tufted perennial, 50-150 cm. high, from creeping 

 rootstocks, smooth throughout save the spikelets. Leaf-blades 

 erect, flat or conduplicate, almost obtuse, the lower often 40-60 

 cm. long, 3-4-6 mm. wide. Panicle exserted, slender, interrupted, 

 5-12 cm. long. Spikelets 3 mm. long, hairs spreading, outer 

 empty glumes oval, 5-nerved, red near the apex, with 4 vertical 

 rows of hairs, third glume (floral glume of the lower floret) thin, 

 oval, 3 mm. long, with no flower, floral glume of fertile floret 

 delicately 5-nerved, its palea delicately 4-nerved. 



Florida, A. H. Curfiss 3603; Mississippi, /. Donnell Smith in 

 1885. 



Pine-barren swamps. Southern States. 



