IOWA ACADEMY OP SCIENCES. 
107 
Alopecurus geniculatus L., var. aristulatus Torr. Swamps, 
infrequent. 
Sporobolus heterolepis Gray. Dry ground, frequent. 
S. neglectus Nash., Bull. Torr. Bot. Club, 22: 463, N. 1896. 
Waste grounds and probably prairies, frequent. Not before 
reported in Iowa, but confused with S. vagincEjlorus Vasey. 
Determined by George V. Nash. 
Phleum pratense L. Commonly escaped. 
Agrostis alba L. Meadows and roadsides, common. 
A. alba L., var. vulgaris Thurb. Probably common as the 
last. 
A. scabra Willd. Dry ground. 
Ginna arundinacea L. Moist, wooded ravines, frequent. 
Galamagrostis canadensis Beauv. Wet prairies, frequent. 
Bouteloua Jiirsuta Lag. Sandy ground, rare. Mr. A. S. 
Skinner, Coll. 
B. racemosa Lag. Dry prairies, common. 
Phragmites comrnunisTvm. Wet ground, rare. 
Koeleria cristata Pers. Prairies, common. 
Eragrostis reptans Nees. Sandy river banks, common. 
E. major Host. Waste ground, common. 
E. franMi Meyer. Sandy river banks, infrequent. 
E. petinacea Gray. Sandy river banks, infrequent. 
Melicca mutica Walt. Open woods, rare. 
Dactylis glomerata L. Yards, rare. 
Poa pratensis L. Meadows and roadsides, common 
Glyceria nervata Trin. Low ground, common. 
Festuca nutans Willd. Woods, frequent. 
Bromus kalinii Gray. Dry ground, infrequent. 
B, ciliatus L. Woods, common. 
B. ciliatus L., var. purgans Gray. Woods, infrequent. 
Agropyrum repens Beauv. Waste ground, infrequent. 
Hordeum jubatum L. Waste ground common. 
Elymus virginicus L. River banks, abundant. 
E. canadensis L. River banks and waste ground, common. 
E. striatus Willd. Woods, common. 
Asprella hystrix Willd. Woods, common. 
