SHORE OF LAKE HURON 25 



Agropyron smithii Rydb. Western wheat-grass. In cities, villag 

 and waste places from Bay County to Bois Blanc Island, Mackinac 

 County. Frequent. 



Agropyron repens (L.) Beauv. Quack-grass. In cities, villages and 

 cultivated grounds. Frequent throughout. 



Agropyron dasystachyum (Hook.) Scribn. Northern wheat-grass. In 

 spots on the sandy beach of Lake Huron. A sand binder against the 

 action of wind. Seldom abundant. Occasional throughout. 



Agropyron ca?iinum (h.) Be&uv. Awned sheat-grass. Near Linwood 

 in Bay County in dryish open ground. Apparently infrequent. 



Secale cereale L. Rye. On the sandy beach of Lake Huron near Lin- 

 wood in Bay County. Apparently a permanent escape. Plentiful. 



Hordeum jubatum L. Squirrel-tail grass. Noticed now in waste places 

 of all cities and villages. Frequent throughout. From the west. 



Elymus virginicus L. Virginia wild rye. In damp shaded ground. 

 Apparently infrequent. 



Elymus canadensis L. Nodding wild rye. On and near sandy beach 

 of Lake Huron. A good sand binder against the action of wind. Plenti- 

 ful throughout. 



Hystrix patuia Moench. Bottle-brush grass. Open or shaded ground 

 from Bay County to Mackinaw City. Frequent. Noticed in particular 

 near Mio, Oscoda County. 



CYPERACEAE. Sedge Family 



Cyperus filicuhnis Vahl. Slender cyperus. Dry open ground near 

 Mio, Oscoda County. Plentiful. 



Dulichium arundinaceum (L.) Britton. Dulichium. In wet open 

 places and on borders of ponds. Plentiful throughout. 



Eleocharis obtusa (Willd.) Schultes. Blunt spike-rush. In damp, 

 muddy, mostly open places, often in damp sand. Frequent throughout. 



Eleocharis palustris (L.) R. & S. Creeping spike-rush. In wet marshy 

 open ground. Plentiful throughout. 



Eleocharis palustris glaucescens (Willd.) Gray. Slender creeping 

 spike-rush. In damp open ground at St. Ignace. Plentiful. Perhaps 

 existing throughout, but overlooked. 



Eleocharis palustris vigens Bailey. Large creeping spike-rush. In 

 shallow water of small lakes, and slow streams. Frequent throughout. 



Eleocharis acicularis (L.) R. & S. Needle spike-rush. Wet muddy or 

 .wet sandy places near Lake Huron shore, and in springy spots. Fre- 

 quent throughout. 



Eleocharis tenuis (Willd.) Schultes. Slender spike-rush. Wet marshy 

 open places. Frequent throughout. 



Eleocharis rostellata Torr. Beaked spike-rush. On the east side of 



