GRAMINEAE 23 



3. Chaetochloa viridis (L.) Scribn. Green Foxtail-grass. (Man. 

 p. 90 ; I. F./. 282.) In waste places and cultivated grounds, throughout 

 N. A., except the extreme north. Naturalized from Europe. — Pennsyl- 

 vania : Delaware ; Chester ; Bucks ; Northampton ; Franklin ; 

 Lancaster ; Erie ; Philadelphia. 



4. Chaetochloa Italica (L.) Scribn. Italian MillET. Hungarxa.n 

 Grass. (Man. p. 90 ; I. F.y. 283.) In waste places, Quebec to Minn., 

 Neb., Fla. and Tex. Native of the Old World. — Pennsylvania : Ches- 

 ter ; Northampton ; Luzerne ; Lycoming ; Bucks ; Philadelphta. ; 

 Allegheny. 



12. CENCHRUS L- 

 1. Cenchrus tribuloides L. Bur-grass. Hedgehog-gr.\ss. (Man. 

 p. 90; \.V. f. 284. ) On sandy shores and in waste or cultivated places, 

 Me. to Minn., Colo., Fla. and Tex. — Pennsylvania: Delaware; Ches- 

 ter ; Bucks ; Luzerne ; Northampton ; Lancaster ; Dauphin ; 

 Philadelphia. 



13. ZIZANIA L. 

 1. Zizania aquatica L. Wild or Indian Rice. Water OaTS. 

 (Man. p. 91 ; I. F. /. 286.) In swamps, N. B. to Man. .south to Fla. and 

 Te-K.— Pennsylvania : Delaware; Chester; Philadelphia; Bucks; 

 Lancaster, in Susquehanna above Marietta ; York ; EriE, Presque 

 Isle. 



14. HOMALOCENCHRUS Mieg. 



Stamens i or 2 : panicle-branches singly disposed, usually less than 8. 



I. H. Virginicus. 

 Stamens 3 : panicle-branches, at least the lower ones, in whorls or approxi- 

 mately in pairs, usually exceeding 15. 2. H. oryzoides. 



1. HomalocenchusVirginicus(Willd.)Britton. WhiteGrass, (Man. 

 p. 91 ; I. F.y. 28 J. ) In swamps or wet or moist woods. Me. to Minn., Fla., 

 Kans. and Tex. — Pennsylvania : Delaw.\re ; Chester ; Bucks ; North- 

 ampton ; Franklin ; Lancaster ; Huntingdon ; Erie, Fenno ; Phil- 

 adelphia ; Monroe ; York. 



2, Homalocenchrus oryzoides (L.) Poll. Rice Cut-gr.\ss. (Man. 

 p. 91 ; I. F. f. 28S.) In swamps and along streams, N. S. to Ont., Fla., 

 Kans. and Tex. — Pennsylvania : Delaware; Chester; Bucks; Lu- 

 zerne ; Northampton ; Lancaster ; Erie ; Montgomery ; Jeffer- 

 son ; Philadelphia ; Franklin ; Pike ; Monroe. 



15. PHALARIS L. 

 Outer scales of the spikelets not winged. i. P. arundinacea. 



Outer scales of the spikelets manifestly winged. 2. P. Canariensis. 



1. Phalaris arundinacea L. REEd Canary-grass. (Man. p. 92 ; I. 

 F./. 2go. ) In moist or wet soil, N. S. to B. C, south to N. J., Ky., Kans, 

 andNev. Also in Eu. and Asia. /V?/«5y/t^a«?a .• Delaware ; Philadel- 

 phia ; Chester ; Bucks ; Northampton ; Luzerne ; Huntingdon ; 

 Erie ; Monroe ; Lancaster ; Susquehanna ; Allegheny. 



