16 GRAMINEAE 



DElPHiA ; Bucks ; Lancaster ; Dauphin ; Lebanon ; Centre ; Bi^air ; 

 Erie ; York ; Ai,i<egheny. 



3. Andropogon Virginlous L. Virginia BEard-grass. (Man. p. 

 70 ; I. F. /. 220.) In fields or thickets, Mass. to 111., Fla. and Texas. — 

 Pennsylvania: DELAWARE; CHESTER; Philadelphia; Lancaster; 

 Luzerne. 



4. Andropogon corymbosus (Chapm.) Nash, Bushy Beard-GRASS. 

 (Man. p. 69; I. F. f. 221.) In damp soil or swamps, N. Y. and Pa. to 

 Via..— Pennsylvania : Delaware ; Chester ; Lancaster ; Bucks ; 

 Montgomery. 



4. SORGHUM Pers. 



1. Sorghum Halepense (L.) Pers. Johnson- GRASS. (Man. p. 71 ; I- 

 F. /. 22^.) In waste places and fields, Pa. to Kans., Fla. to Tex. — 

 Pennsylvania : Philadelphia ; Bucks. 



5. SORGHASTRUM Nash. 



1. Sorghaatrumavenaceum (Michx.) Nash. Indian GRASS. (Man. 



p. 71 ; I. F./. 224.) In dry fields, Ont. to Man., R. I., Fla. and Ariz. — 



Pennsylvania : Delaware ; Chester ; Bucks ; Lancaster ; Luzerne ; 



Huntingdon ; Philadelphia ; York ; Dauphin ; ERIE ; Allegheny. 



6. NAZIA Adans. 

 1. Nazia raoemosa (L.) Kuntze. PricklE GRASS. (Man. p. 72;!. 

 F./. 226.) On or near ballast. — Pennsylvania: Philadelphia. 



7. PASPALUM L. 



Rachis dilated, its broad margins membranous and at maturity inrolled on the 



spikelets, 1. P. ■membranacewm, 



Rachis winged or wingless, its margins neither membranous nor enclosing the 



spikelets. 



Plants with i-several raceme- bearing peduncles from the uppermost sheath. 



Peduncle long-hirsute below the raceme : basal leaf-sheaths glabrous or 



nearly so. ^. P. pubescens. 



Peduncles glabrous : basal leaf -sheaths generally hirsute. 



3. P. Muhlenbergii. 

 Plants with simple stems, no raceme-bearing peduncles from the upper sheath. 



4. P. laeve. 



1. Paspalum membranaoeum Walt. WALTER'S Paspalum. (Man. 

 p. 73 ; I. F./. 228.) In wet or moist soil, N. J. to Ohio, Fla. and Tex.— 

 Pennsylvania : Philadelphia, on ballast and in waste places. 



2. Paspalum pubescens Muhl. Pubescent Paspalum. (Man. p. 

 74.) In fields, N. Y. to D. C. and Tenn. Pennsylvania : MONTGOMERY, 

 Willow Grove. 



3. Paspalum Muhlenbergii Nash. MuhlEnberg's Paspalum. 

 (Man. p. 75.) In sandy or stony ground, Mass to Mo., S. C, Miss, 

 and I. Terr. — Pennsylvania : Northampton ; Franklin ; Lancaster ! 

 Bucks ; Philadelphia ; York ; Chester ; Delaware, Tinicum. 



4. Paspalum laeve Michx. Field Paspalum. (Man. p. 73 ; I. F. 

 /. 234.) In fields, R. I. to Ky. and Mo., south to Fla. and Tex.— /k««- 



