176 BOTANY OF MICHIGAN 



*. Cyperus fdiculmus Vahl. Slender cyperus. Occasional throughout 

 in dry poor open ground. 



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

 places, especiaHy near the small lakes and low banks of slow streams. 



Eleocharis obtusa (Willd.) Schultes. Blunt spike rush. "Wet mud 

 near the bay in Akron Township. " C. A. Davis. "Frequent throughout 

 the county. 



Eleocharis palustris (L.) R. & S. Creeping spike rush. Common in 

 wet marslry places. 



Eleocharis palustris glaucescens (Willd.) Gray. Creeping spike rush. 

 Noticed by Prof. C. A. Davis in damp places near the shore of Saginaw 

 Bay. 



Eleocharis palustris vigens Bailey. Larger creeping spike rush. In 

 wet places or shallow water about small lakes. Plentiful. 



Eleocharis acicularis (L.) R. & S. Needle spike rush. "Wet sandy 

 soil along ditches and the beach of Saginaw Bay in Akron and Wisner 

 townships." C. A. Davis. 



Eleocharis tenuis (Willd.) Schultes. Slender spike rush. Common in 

 damp open ground. 



Eleocharis rostellaia Torr. Beaked spike rush. "Wisner Township 

 in swales along the base of the dune line next to the shore of the bay. " 

 C A. Davis. 



Scirpus pauciflorus Lightf. Few-flowered club rush. Noticed by 

 Prof. C. A. Davis in wet ground along the shore of Saginaw Bay where it 

 formed dense carpets below the storm wave line. 



Scirpus subterminalis Torr. Water club-rush. In shallow water of 

 ponds, caves and small lakes. Frequent. 



Scirpus americanus Pers. Three-square. Common along the shore of 

 Saginaw Baj r , about ponds, the small lakes, and along low banks of 

 slow streams. 



Scirpus validus Vahl. Great bulrush. Common in wet places, mar- 

 gins of ponds and small lakes. 



Scirpus occidentalis (Wats.) Chase. Western bulrush. Shay's Lake, 

 Cat Lake, Murphy's Lake, and in shallow water often extending far out 

 into the water along the shore of Saginaw Bay. 



Scirpus atrovirens Muhl. Dark-green bulrush. Common in wet 

 marshy open places and often in damp ground along roads. 



Scirpus lineatus Michx. Reddish bulrush. Noticed in marshy ground 

 about Shay's Lake. Probably frequent throughout. 



Scirpus cyperinus pelius F'ernald. Wool grass. Common throughout 

 in wet marshy open places. 



Eriophorum callitrix Cham. Hare 's-t ail. Frequent in bogs. 



Eriophorum viridi-carinatum (Engelm.) Fernald. Tall cotton grass. 



