86 BOTANY OP MICHIGAN 



Bromus pumpellianus melicoides Shear. Pumpelly's meliolike brome 

 grass. A western form plentiful on the sandy beach at Mackinaw City 

 in Cheboygan County. It will probably be found in the Northern 

 Peninsula. 



Agropyron repens (L.) Beauv. Quack-grass. Common as a weed in 

 cities and villages and cultivated grounds. 



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

 Sandy beaches of Lake Michigan and Lake Superior. When abundant 

 it is a good sand binder. 



Agropyrum tenerum Vasey. Slender wheat-grass. On the sandy 

 beach of Grand Island near Munising in Alger County. Plentiful. 

 Perhaps the identification is doubtful. 



Agropyron caninum (L.) Beauv. Awned wheat-grass. Open dryish 

 ground on Grand Island near Munising in Alger County. Plentiful. 



Secale cereale L. Common rye. Escaping from cultivation and ap- 

 parently persisting in cities, villages and cultivated grounds. 



Hordeum jubatum L. Squirrel-tail grass. Plentiful in cities and vil- 

 lages and occasional in damp meadow-like ground. 



Elymus virginicus L. Virginia wild rye. Plentiful along low shaded 

 banks of streams and in damp open woods. 



Elymus canadensis L. Nodding wild rye. Sand}^ beaches of Lake 

 Michigan and Lake Superior. Frequent. Acts as a good sand binder. 



Hystrix patula Moench. Bottle-brush grass. Frequent in beech- 

 maple-birch woods. 



CYPERACEAE. Sedge Family 



Dulichium arundinaceum (L.) Britton. Dulichium. Wet open swampy 

 places and on borders of ponds. Often abundant. 



Eleocharis palustris (L.) R..& S. Creeping spike-rush. Wet meadow- 

 like ground and often in shallow water. Common. 



Eleocharis palustris vigens Bailey. Large spike-rush. Margins of 

 ponds and small lakes and usually in shallow water. Often abundant. 



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

 muddy places about ponds, small lakes, and along low banks of slow 

 streams. Often abundant. 



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

 meadow-like ground. Abundant. 



Scirpus pauciflorus Lightf. Few-flowered club-rush. Wet open 

 calcareous ground near Lake Michigan shore. Often abundant. 



Scirpus caespitosus L. Tufted club-rush. Deer-hair. Wet boggy 

 open ground on margin of a tamarack-black spruce swamp south of 

 Shingleton. Plentiful. 



Scirpus hudsonianus (Michx.) Fernald. (Eriophorum alpinum L.). 

 Alpine cotton-grass. Wet open marshy ground. Often abundant. 



