No. 50. 
189 
MuHLENBERGiA, (continued.) 
cinna, Trin . Cinna amndinacea, L . Swamps and wet shady 
woods . August . 
diifusa, Schreb . Rocky hill sides and fields . August . 
ViLFA, Adans . 
serotina, Torr. in Gray's Gram. Cyy. Agrostis serotina, Torr. 
fl. Sandy swamps, Long Island. September. 
vaginasflora, Torr. I. c. Agrostis virginica, Mu/iL, not of Linn. 
Sandy soils and sterile hill sides . September- 
October . 
longifolia, Torr. 1. c. Agrostis longifolia, Torr.fl. Sandy fields, 
Long Island . September . 
heterolepis, Gray. Rocks, Jelfers on county . Dr. Gray. Au- 
gust-September . 
Alopecurus, L. Fox-tail Grass. 
§ pratensis, L. Fields and pastures . June, 
geniculatus, L . Wet meadows . June . 
Var. aristulatus, Torr. A. aristulatus, Michx. With the pre- 
ceding . 
Phleum, L. Cat-tail Grass. 
§ pratense, L. Timothy^ Herd^s Grass. Fields. June- August. 
Phalaris, L. Canary Grass. 
arundinacea, L. Swamps. July. 
^ canariensis, L . Fields and pastures . 
Milium, L. Millet Grass. 
effusum, L. Wet woods. July. Northern and western counties, 
pungens, Torr . Rocky hills . May . 
PiPTATHERUM, P. de Beauv . 
nigrum, Torr . Oryzopsis melanocarpa, Muhl . Rocky woods . 
August. 
Stipa, L. Feather Grass. 
avenacea, L . Dry woods and hill sides . June . 
Oryzopsis, Michx. 
asperifolia, Michx. Mountain Rice . Woody hill sides ; western 
counties . April-May . 
