22 - GRAMINEAE 



30. Fanicmn cotmnutatum Schultes. Variable Panicum. (Man. 

 p. 88; I. F.y. 2JS-) ^^ dry woods and thickets, N. Y. to Ky., Fla. and 

 Tex. — Pennsylvania : Northampton ; Lancaster ; Franklin ; Bucks ; 

 Delaware. 



31. Panic\im Ashei G. Pearson. Ashe's Panicum. (Man. p. 88.) 

 In dry woods, N. Y. to Tenn. and Ga. ; also in Mo. — Pennsylvania : Lan- 

 C.'^STER. 



32. Panicum macrocarpon LeConte. Large-fruited Panicum. 

 (Man. p. 88; I. F. /. 256.) Moist places, Vt. to N. Y., N. J. and Pa. 

 — Pennsylvania: Monroe; North.\mpton ; Bucks, Rockhill ; Pike; 

 Delaware. 



33. Panicum Porterianum Nash. Porter's Panicum. (Man. p. 88; 

 I. F.y. ^J/. ) In woods, Me. to Minn., south to Fla. and Tex. — Pentisyl- 

 vania : Lancaster ; Bucks ; Bedford ; C.\rbon ; Huntingdon ; Dela- 

 ware ; Chester ; Luzerne ; Montgomery ; Fulton ; Philadelphia ; 

 Franklin ; Monroe ; Lackawanna. 



34. Panicum pubifolium Nash. H.\iry-leaved Panic grass. (Man. 

 p. 1041.) In rocky woods, N. Y. to Mo., Fla. and Minn. — Pennsylvania : 

 Northampton; Bucks; Carbon; Lancaster; Franklin. 



35. Panicum clandestinum L. Hispid Panicum. (Man. p. 88 ; I. F. 

 y. 2S/'-) In thickets, Quebec to Mich., south to Ga. and Tex. — Pennsyl- 

 vania : Del.\ware; Chester; Bucks; Philadelphia; North.\mp- 

 ton ; Lancaster; Franklin; Huntingdon; Ven.\ngo ; Montgom- 

 ery ; Pike. 



36. Panicum decoloratum Nash. Discolored Panic grass. — Penn- 

 sylvania : Bucks, Tullytown. 



11. CHAETOCHLOA. 



Inflorescence with the spikelets racemosely arranged : bristles 5-16 at the base 



of each spikelet, involucrate. i. C. glanca. 



Inflorescence with the spikelets in clusters or on branches : bristles 1-3 at the 

 base of each spikelet, not involucrate. 

 Bristles downwardly barbed. 2. C. verticillala. 



Bristles upwardly barbed. 

 Panicle usually i cm. thick or less : bristles commonly green : spikelets 



about 2 mm. long. 3. C. viridis. 



Panicle usually 2-3 cm. thick : bristles usually purple : spikelets 2.5-3 mm. 



long. 4. C. Ilalica. 



1. Chaetochloa glauca (L. ) Scribn. Yellow Foxtail. Pigeon- 

 grass. (Man. p. 89; I. F.y 2S1.') In waste places and cultivated 

 grounds throughout N. Am., except the extreme north. Naturalized 

 from Europe. — Pennsylvariia : Delaware ; Chester ; Phil.-vdelphia ; 

 Bucks ; North.\mpton ; Lancaster ; Huntingdon ; Erie ; Franklin. 



2. Chaetochloa verticillala (L.) Scribn. Foxtail-grass. (Man. p. 

 89; I. F. y 2S0.) In waste places, N. S. and Ont. to N. J. and Ky.— 

 Pennsylvania: Northampton; Bucks; Lancaster; Philadelphia; 

 Chester; Allegheny. 



