148 SIXTEENTH REPORT. 



Scirpus pauciflorus Light f. Few-flowered Clul) Rush. — Occasional in 

 damp ground. Noticed in particular on borders of coves and ponds in 

 damp sand at Port Franks. 



Scirpus subterminalis Torr. Water Club Rush. — Frequent in ponds and 

 slow streams. Noticed in particular in Sarnia Bay, and in still water near 

 Lake St. Clair. 



Scirpus debilis Pursh. Weak-stalked Club Rush. — Frequent on muddy 

 borders of ponds and slow streams. Abundant near the mouths of St. Clair 

 River. 



Scirpus americanus Pers. Three-square. — Very common in water and 

 wet places, on borders of ponds, lakes, and streams. 



Scirpus validus Vahl. Great Bulrush. Lake Bulrush, — Common in 

 margins of lakes, ponds and streams. 



Scirpus occidentalis (Wats.) Chase. Western Bulrush. — Frequent on 

 borders of St. Clair River and Great Lakes. 



Scirpus heterochaetus Chase. Unequal-bristled Bulrush. — Frequent in 

 wet marshy places. 



Scirpus fluviatilis (Torr.) Gray. River Bulrush. — Occasional on borders 

 of lakes and streams. Noticed in particular as abundant along the mouths 

 of St. Clair River and in low wet places on Walpole Island. 



Scirpus atrovirens Muhl. Dark-green Bulrush. — Common in marshes, 

 bogs, wet places and damp meadows. 



Scirpus georgianus Harper. Club Rush. — Occasional in wet open woods. 



Scirpus lineatus Michx. Reddish Bulrush. — Frequent in wet and marshy 

 ground. 



Scirpus cyperinus pelius Fernald. Wool Grass. — Common in open 

 swamps and wet meadows. 



Eriophorum viridi-carinatum (Engelm.) Fernald. Tall Cotton-grass. Fre- 

 quent in bogs and very wet meadows. 



Eriophorum virginicum L. Sheathed Cotton Grass. — Occasional in very 

 boggy open places. 



Rynchospora alba (L.) Vahl. White Beaked Rush. — Occasional in very 

 wet and marshy places. Noticed in particular near a pond east of Point 

 Edward. 



Rynchospora capillacea Torr. Capillary Beak Rush. — Frequent in wet 

 and marshy ground. 



Rynchospora glomerata (L.) Vahl. Clustered Beak Rush. — Occasional in 

 low ground. Abundant in prairie-like ground on the delta islands of St. 

 Clair River. 



Cladium mariscoides (Muhl.) Torr. Twig Rush. — Common in bogs, very 

 wet and marshy places. 



Scleria triglomerata Michx. Tall Nut Rush. — Abundant in prairie-like 

 ground on the delta islands of St. Clair River. Not noticed elsewhere. 



Seleria Pauciflora Muhl. Papillose Nut-rush. — In dry open ground on the 

 delta Islands. Frecjuent. 



Scleria verticillata Muhl. Low Nut Rush. — Frequent in dam]i sandy 

 ground along the mouths of St. Clair River. Not noticed elsewhere. 



Carex muskingumensis Schwein. Muskingum Sedge. — Frequent in moist 

 woods and thickets. 



Carex scoparia Schkuhr. Pointed Broom Sedge. — Common in dry or 

 dam]") open ground. 



Carex tribuloides Wahlenb. Blunt Broom Sedge. — Frequent in damp 

 meadows and moist open woods. 



