No. 50. 189 



Muhlenbergia, (continued.) 



cinna, Trin. Cinna arundinacea,L. Swamps and wet shady 



woods . August . 

 diffusa, Schreb . Rocky hill sides.nd fields . August . 



Vilfa, Adans . 



serotina, Torr. in Grai/s Gram. <^yp. Agrostis serotina, Torr. 

 fi. Sandy swam], Long Island . September. 



vaginagflora, Torr. I. c. Agrostis -ginica, MuhL, not of Linn. 

 Sandy soils and srile hill sides . September- 

 October . 



longifolia, Torr. I. c. Agrostis lonfolia, Torr.fl. Sandy fields, 

 Long Island. Seember. 



heterolepis, Gray. Rocks, Jeffern county . Dr. Gray . Au- 

 gust-September . 



Alopecurus, L. Fox-tail Grass. 



§ pratensis, L . Fields and pasture June . 

 geniculatus, L. Wet meadows, une. 



Var. avistulatus, Torr. A. aristitus, Michx. With the pre- 

 ceding . 



Phleum, L. Cat-tail Grass. 



§ pratense, L. Timothy, Herd's 'ass. Fields. June- August, 



Phalaris, L. Canary Grass. 



arundinacea, L. Swamps. Jub 

 § canadensis, L . Fields and pastes . 



Milium, L. Millet Grass. 



effusum, L. Wet woods . July . rthern and western counties, 

 pungens, Torr . Rocky hills . IV . 



Piptatherum, P. de Beauv . 



nigrum, Torr. Oryzopsis melanopa, Muhl. Rocky woods. 



August . 



Stipa, L. Feather Grass. 



avenacea, L . Dry woods and hilHes . June . 



Oryzopsis, Michx. 



asperifolia, Michx. Mountain Ric Woody hill sides ; western 

 counties. April- y. 



