GRAMINEAE 21 



17. Panicum dlchotomum L. Forked Panicum. (Man. p. 84; I. 

 F. f. 264.) In woodlands and thickets, N. Y. to Ky., Mo., and south- 

 ward. — Pennsylvania : Northampton ; Philadelphia ; Chester ; 

 Pike ; Lancaster ; Delaware, Tinicum. 



18. Panicum barbulatum Michx. Barbed Panicum. (Man. p. 85; 

 I. F. /. 26J. ) Moist soil, N. Y. to Fla. and Tex. — Pennsylvania 

 Northampton ; Chester ; Bucks ; Delaware, Tinicum ; Lancaster. 



19. Panicum boreale Nash. Northern Panicum. (Man. p. 85 ; I. P. 

 y. 26/.) Moist, often rich soil, Newf. and Out. to Vt., Pa. and Minn. — 



Pennsylvania : Monroe, Pocono Summit, Tobyhanna ; Northampton. 



20. Panicum nitidum Lam. Shining Panicum. (Man. p. 85; I. F. 

 /. 26J.) Common in dry sandy soil in the Eastern and Middle States. — 

 Pennsylvania : Monroe ; Northampton ; Bucks ; Delaware ; Lan- 

 caster ; Allegheny. 



21. Panicum implicattmiScribn. Hairy-panicled Panicum. (Man. 

 p. 86; I. V.f. 267a.) In dry soil, Me. to Conn., N. Y. and N. J. — Penn- 

 sylvania : Northampton. 



22. Paniomn vmciphyllum Trin. Hairy Panicum. (Man. p. 86, as 

 P. pubescens ; I. F. f. 26J.) In dry soil, Me. and Quebec to B. C, Ga. 

 and Ariz. — Pennsylvania: Northampton; Pike; Bucks; Monroe; 

 Philadelphia ; Chester ; Franklin ; Lancaster ; Montgomery ; 

 Delaware. 



23. Panicum Atlanticum Nash. Atlantic Panicum. (Man. p. 86; 

 I. F. f. 267/. ) Dry soil, N. Y. to Va. — Pennsylvania : Northampton. 



24. Panicum Tenneaseense Ashe. Tennessee Panicum. (Man. p. 

 1040.) In woods, N. Y. to 111., Tenn. and Fla. — Pennsylvania: North- 

 ampton ; Lancaster. 



25. Panicum scoparlum Lam. Velvety Panicum. (Man. p. 87, 

 as P. viscidum ; I. F. /. 266.) In moist soil, N. J. to Ind., I. Terr., Fla. 

 and Texas. — Pennsylvania : Delaware, Tinicum. 



26. Panicum Scribnerianum Nash. Scribner's Panicum. (Man. 

 p. 87 ; I. F. /. 2sg.) In dry or moist soil. Me. to Minn., south to Va. 

 and Ariz. — Pennsylvania : Lancaster, Safe Harbor ; Chester, barrens ; 

 Northampton, Easton ; Bucks ; Philadelphia ; Del.-vware ; Erie. 



27. Panicum xanthophysum A. Gray. Slender Panicum. (Man. 

 p. 87; I. F. / 2S&-) Dry soil, Me. to Man., N. J. and Penn. — Pennsyl- 

 vania : Bucks, Tullytown ; Lycoming ; Luzerne. 



28. Panicum sphaerocarpon Ell. Round-fruited Panicum. (Man. 

 p. 88 ; I. F./. 252.) Dry soil, southern Ont., and Mo,, to Fla., Tex. and 

 Me^.— Pennsylvania : Northampton; Luzerne; Chester; Bucks; 

 Philadelphia ; Delaware ; Montgomery. 



29. Panicum polyanthesSchult. Small-fruited Panicum. (Man. 

 p. 88 ; I. F. /. 2_5j. ) Woods and thickets, southern N. Y. to Pa. and 

 Mich., south to Fla., La., Neb. and Tex. — Pennsylvania: Perry, on 

 Susquehanna ; Lancaster, Tucquan Island ; Philadelphia ; Bucks ; 

 Chester ; Delaware. 



