52 MICHIGAN ACADEMY OP SCIENCE. 



SCIRPUS L. 



*395. S. Americanus Pers. Three-square. 8. pungens Vahl. Borders of ponds, 

 Alma, Ann Arbor, C. A. Davis. Common. Th. 



*396. S. atrovirens Muhl. Dark green Bulrush. Alma, Ann Arbor, C. A. Davis. 

 Wet meadows. Common. 



397. S. atrovirens pallidus Britton. Introduced from the west into Bay Co., 

 G. M. Bradford; Keweenaw Co., Detroit, O. A. Farwell. 



398. S. caespitosus L. Tufted Club-rush. Dr. A. B. Lyons; Marquette, B. J. 

 Hill; north shore of Lake Superior, Agassiz. U. P. 



*399. S. Clintonii A. Gray. Clinton's Club-rush. Bluffs along Fish Creek, Hub- 

 bardston; Bath, L. H. Bailey; St. Glair Co., C. K. Dodge; Bay City, C. A. Davis. 

 Rare. C. 



*400. S. cyperinus (L.) Kunth. Wool-grass. Wats. & Coult. Alma, Ann Arbor, 

 C. A. Davis. Frequent and variable. 



401. S. cyperinus Eriophorum (Michx.) Britton. EripTiorum cyperinum laxum. 

 Keweenaw Co., O. A. Farwell; Bay City, G. M. Bradford. 



*402. S. debilis Pursh. Weak-stalked Club-rush. Macomb Co., Cooley; Park 

 Lake, Clinton Co., Wheeler; St. Glair Co., C. K. Dodge; Manistee, F. P. Daniels; 

 Alma, C. A. Davis. Rare. 



403. S. Hallii A. Gray. Muskegon, C. D. McLouth. 



404. S. fluviatilis (Torr.) A. Gray. River Club-rush. Margins of rivers, S. 

 Mich., Winch. Oat.; Macomb Co.; Hubbardston; Detroit; abundant along Maple 

 River; west of Lake Superior, Macoun. Th. 



*405. S. lacustris L. Great Bulrush. In still water. Common. Th. 



*406. S. lineatus Michx. Reddish Bulrush. Common in Bay Co., G. M. Brad- 

 ford; S. W., H. S. Pepoon. River banks, S. Mich., Winch Cat.; Flint; Macomb 

 Co.; Hubbardston; St. Glair Co., C. K. Dodge; Keweenaw Co.; Alma, Ann Arbor, 

 C. A. Davis. 



407. S. microcarpus Presl. Small-fruited Bulrush. 8. sylvaticus ciigynus Boeckl. 

 Lake Nipigon, Ont, Macoun; Keweenaw Co., O. A. Farwell; Manistee, F. P. Daniels. 



408. S. nanus Spreng. Dwarf Club-rush. Hubbardston; Clinton Co., E. F. 

 Smith. Eleocharis pygmaea Torr. 



409. S. Olneyi A. Gray. Olney's Bulrush. Border of deer lick near Hubbards- 

 ton, Wheeler. 



410. S. pauciflorus Lightf. Few-flowered Club-rush. Grand Rapids, Miss E. J. 

 Cole; Port Austin, C. A. Davis. Frequent northward. 



411. S. polyphyllus Vahl. Leafy Bulrush. S. Mich., Wright Cat. 



*412. S. Smithii A. Gray. Smith's Club-rush. Shore of Park Lake, C. F. 

 Wheeler, 1891; Bay Co., G. M. Bradford; Manistee, F. P. Daniels. 



*413. S. subterminalis Torr. Water Club-rush. Hough ton Lake; Woodward 

 Lake, Ionia Co.; Flint; Macomb Co.; S. Mich., Wright Cat.; north of Lake 

 Superior. Can. Cat.; Alma, C. A. Davis. Infrequent. 



413a. S. sylvaticus L. Wood Bulrush. Keweenaw Co., O. A. Farwell. 

 *414. S. Torreyi Olney. Torrey's Bulrush. Border of Pine Lake, Ingham Co., 

 Bailey. 



ERIOPHORUM L. 



415. E. alpinum L. Alpine Cotton-grass. Mud Lake; Petoskey, E. J. Hill; 

 Macomb Co., Cooley; Elk Rapids, W. S. Cooper; Keweenaw Co. Infrequent. Th. 



416. E. gracile Koch. Slender Cotton-grass. S. Mich. Wright Cat.; Flint; Hub- 

 bardston; Montcalm Co., and northward; Kalamazoo, Tu thill; Ann Arbor, C. A. 

 Davis. Rare. Th. 



*418. E. polystachyon L. Tall Cotton-grass. Swamps. Common. Th. 



*419. E. vaginatum L. Sheathed Cotton-grass. Sphagnous swamps. S. Mich., 

 Winch. Cat.; Macomb Co.; St. Clair Co., C. K. Dodge; near Ann Arbor, C. A. Davis; 

 Hubbardston; Bay Co., and northward. Th. 



*420. E. Virginicum L. Virginia Cotton-grass. Sphagnous swamps. Ann Arbor, 

 Allmend. Cat.; Flint; Bay Co.; Hubbardston, Vestaburg, C. A. Davis, northward. 

 Infrequent. Th. 



421. E. Virginicum album A. Gray. Keweenaw Co., O. A. Farwell. 



FUIRENA Rottb. 



422. F. squarrosa Michx. Squarrose Fuirena. F. squarrosa pumila Torr. 

 Macomb Co., Dr. D. Cooley. Rare. C. 



