26 GRAMINEAE 



5. Muhlenbergia tenuiflora (Willd.) B.S.P. Slender Muhlen- 

 BERGIA. (Man. p. loo ; I. F.y". 326.) In rocky woods, Mass. to south- 

 ern Ont. and Minn., Ala. and Tex. — Pennsylvania : Delaware ; Ches- 

 ter ; Bucks ; Northampton ; Huntingdon ; Blair ; Lancaster ; 

 Franklin. 



6. Muhlenbergia diffusa Willd. Nimble Will. Dropseed Grass. 

 (Man. p. 100; I. 'B./.J27.) On dry hills and in woods. Me. to Minn., 

 Fla. and Tex. — Pennsylvania: Delaware; Chester; Bucks; North- 

 ampton; Lancaster; Franklin; Huntingdon; Blair; EkiE; Phila- 

 delphia. 



7. Muhlenbergia capillaris ( Lam. ) Trin. Long awned Hair-grass. 

 (Man. p. loi ; I. F./! j^p.) In dry sandy or rocky soil, Mass. to Mo., 

 Fla. and Tex. — Pemtsylvania : Lancaster, Gap. 



22. BRACHYELYTRUM Beauv. 

 1. Brachyeljrtrum erectum (Schreb. ) Beauv. Brachyelytrum. 

 (Man. p. loi ; I. F. f. 332.) In moist places or woods, Newf. to Minn., 

 N. C, Tenn. and Mo. — Pennsylvania : Delaware; Chester; North- 

 ampton ; Lancaster ; Erie ; Philadelphia ; Monroe ; Lacka- 

 wanna ; Pike ; Franklin. 



23. HELEOCHLOA Host. 

 1. Heleochloa schoenoides (L.) Host. Rush Cat's-tail Grass. 

 (Man. p. 102; I. F. f. 333.) In waste places, southern N. Y. to Del. 

 Nat. from Eu. — Pennsylvania : Philadelphia ; Bucks ; Delaware ; 

 Lancaster, Columbia and Lancaster. 



24. PHLEUM L. 

 1. Phleum pratense L- Timothy. Herd Grass. (Man. p. 102; 

 I. F. /. 334.) In fields nearly throughout N. Am. Also in Eu. and 

 Asia. — Pennsylvania : Northampton; Lancaster; Franklin ; Erie ; 

 Philadelphi.\ ; Chester ; Allegheny. Common. 



25. ALOPECURUS L. 



Empty scales of the spikelet united for 54 their length, glabrous to hispid on 

 the keel. i. A. agrestis. 



Empty scales of the spikelet united for yi their length or less, long-ciliate on 

 the keel. 2. A. geniculatus. 



1. Alopecurus agrestis L. Slender Foxt.\il. (Man. p. 103; I. F. 

 /. 336.) In waste places, southern N. Y. to N. J. Adv. from Eu. 

 Native also of Asia. — Pennsylvania : Philadelphia, on and near ballast. 



2. Alopecurus geniculatus L. Marsh FoxTjvil. (Man. p. 103 ; I. F. 

 /• 337-) III wet soil, Newfoundland to B. C, Fla., Ariz, and Cal. — 

 Pennsylvania : Delaware, Tinicum ; Huntingdon ; Luzerne. 



26. SPOROBOLUS R. Br. 



A. Leaf-sheaths glabrous, 

 a. Upper leaf-sheaths enclosing panicles which are usually concealed, or 

 sometimes partially protruding : terminal panicle contracted, narrow. 



