GRASSES. 349 



Panicum laxiflorum Lam. Encycl. 4:748. 1797. Loose-flo\vei:ed Paxicum. 



Gray, Man. ed. 6, 633. Cliap.Fl. Snp])l. 667. Coulter' Contr. Nat. Herb. 2 : .506. 

 Scribner, (Jras.s. Teun. 51, /. 14, f. -jo. 



Allesbenian to Louisianian area. New Brunswick; New York to Florida. 



Ai.Ar.AMA: Over tbe State. In ligbt sbaded soil. Cnllmau County, 800 feet. Lee 

 County, Auburn. Tuscaloosa, Hale, and Dallas countie.«. Frei^uent; May to July; 

 perennial. 



Type locality : "Avis d'Anierique septentrionale.' 



Herb. Geol. Surv. Herb. Mohr. 



Panicum pyriforme Na.sh, Bull. Torr. Club, 26 : 579. 1899. 



A densely tufted low perennial witli rather slender weak culms 12 to 16 inches 

 high, finally much branched; stem leaves 2 or 3, thin, lax, smooth on both surfaces, 

 serrulate and rough on the margin, long-acuminate, narrowed to the base, 4 to 8 lines 

 wide, on the branches much shorter, sheaths papillose-hirsute with retlexed hairs; 

 panicle much exscrted, ample, ovate, open, with its branches widely spreading, 3 to 

 4A inches long; spikelcts rather few, broadly obovate, pubescent; flowering glume 

 ovate, strongly apiculate. 



Louisianiau area. Florida, Mississippi. 



Alabama: Metamorphic hills to Coast plain. Damp sandy banks. Lee County, 

 Auburn (Baker <(■ Earle). Mobile and iJaldwin counties. 



This species includes forms from Florida and the eastern Gulf coast heretofore 

 united with i'. laxijiorum Lam. 



Type locality: "In clay soil, at Orange Bend, Lake County, Fla., March, 1894."' 

 {Xdsh, 239). ' 



Herb. Geol. Surv. Herb. Mohr. 



Panicum ciliatum Ell. Sk. 1 : 126. 1817. 



P. ciUatifolium Kunth,- Enum. 1 : 108. 1833. 



Ell. 8k. I.e. 



A low, somewhat tufted, pali' green perennial with an erect, smooth, and slender culm 

 8 to 12 inches high ; sheaths smooth ; leaves lanceolate, 1 to 2 inches in length and 2 

 to 3 lines wide, smooth on both surfaces, and with ciliate margins; basal leaves very 

 rumerons; panicle small, 1 to 2 inches long, exserted; spikelets on slender pedi- 

 cels, obovate, acute, smooth; first glume moro than half the length of the second. 



Lonisianian area. Southeastern North Carolina along the coast to Avestern 

 Florida. 



Alabama: Coast plain. Damp low sandy soil. Vicinity of Mobile, .Tune, July, 

 in dry open places {Kearney). 



Type locality : 'Grows in damp soils [South Carolina and Georgia]." 



Herb. Geol. Surv. Herb. Mohr. 



Pcuiicum consanguineum Kunth, Enuni. 1 : 106. 1833. 



Panicum viUnsum Ell. Sk. 1:124. 1817. Not Lam. 1791. Fide G. V.Nash, Bull. 

 Torr. Club, 23:117. 1896. 



Ell. Sk. 1. c. Gray, Man. ed. 6, 633. Chap. Fl. ed. 3, 585. 



Carolinian and Lonisianian areas. Near the coast from North Carolina to Florida 

 and Louisiana. 



Alabama: Lower division Coast Pine belt. Coast plain. Damp light soil. Bald- 

 win and Mobile counties. Washington County. March to July. Flourishes in 

 the Coast plain thronghout the winter. 



Type locality : "America septentrionalis." 



Herb. Geol. Surv. Herb. Mohr. 



Panicum earlei Nash, Bull. Torr. Club, 26 : 571. 1899. 



A densely tufted perennial with slender culm 4 to 6 inches high, smooth; finally 

 branched. Stem leaves about 3, lanceolate, asi-ending, and like the sheaths spar- 

 ingly hirsute with long spreading hairs, A inch to IJ inches long and 1 to 3 lines 

 wide; rough on the luargiu; panicle broadly ovate, with smooth, spreading 

 branches; spikelets elliptic, obtuse, smooth. 



Carolinian area. 



Alabama: Metamorphic hills Lee County, Auburn {Earle ^f- Baker). 



Type locality : "Aubuiii, Lee County, Alabama." {Earle 4'' Baker, Nos. 1.532, 1535.) 



Herb. Geol. Surv. 



Panicum albo-marginatum Nash, Bull. Torr. Club, 24 : 40. 1897. 



A slender, tufted, smooth perennial, with the rather weak culms simple or 

 branched from near the base, 8 to U inches high; leaves lanceolate, mostly clustered 

 near the base, firm, the largest li to 2 inches long and 3 to 4 lines wide; the few 

 upper leaves much reduced, all with white thickened margins. Panicles small, 1 to 



