46 MICHIGAN ACADEMY OP SCIENCE. 



AGROSTIS L. 



*246. A. alba L. Florin or White Bent-grass. Red Top. A. alba, vulgaris Thur- 

 ber. Naturalized from Europe. A common pasture and meadow grass. 



*247. A. alba stolonifera (L.) Vasey. Detroit, O. A. Farwell. 



*248. A. canina L. Brown Bent-grass. Ann Arbor, Winch. Cat., Ronald, Ionia 

 Co. Infrequent. 



*249. A. coarctata Bhrh. Detroit, O. A. Farwell. 



.*250. A. hyemalis (Walt.) B. S. P. Rough Hair-grass. A. scabra Willd. Marshes 

 and sterile soil. Common. Th. 



*251. A. perennans (Walt.) Tuckerman. Thin-grass. Swamps and damp woods 

 S. Mich., Wright; Macomb Co.; Hubbardston. Infrequent. 



*252. A. pseudo-intermedia O. A. Farwell. New name for A. intermedia Scribn. 

 Detroit, O. A. Farwell. 



CALAMAGROSTIS Adans. 



*253. C. Canadensis (Michx.) Beauv. Blue- Joint. Common. 



254. C. confinis (Willd.) Nutt. Bog Reed-grass. G. Lapponica Trin. Isle Royale, 

 Lake Superior, T. C. Porter; Sturgis, F. P. Daniels. 



255. C. Langsdorfii (Link.) Trin. Langsdorf's Reed-grass. Isle Royale, T. C. 

 Porter. 



256. C. neglecta (Ehrh.) Gaertn. Narrow Reed-grass. C. stricta Beauv. Flint, 

 D. Clark; S. W., H. S. Pepoon; and northward to Lake Superior, A. Gray. Rare. 



AMMOPHILA Host. 



257. A. arenaria (L.) Link. Sea Sand-reed. N. & U. P. A. arundinacea Host. 

 This is one of the few plants found both by the ocean and the shores of the Great 

 Lakes, Petoskey; Point au Chene, Winch. Cat.; shores of Lake Huron, C. K. Dodge. 

 Infrequent. 



CALAMOVILFA Hack. 



258. C. longifolia (Hook.) Hack. Long-leaved Reed-grass. Calamagrostis longi- 

 folia Hook. Sand dunes along L. Michigan. S. Haven, Bailey; Petoskey; Point au 

 Chene, Winch. Cat; Oscoda. Th. 



APERA Adans. 

 *259. A. Spica-venti L. Beauv. College lawn. 



DESCHAMPSIA Beauv. 



*260. D. caespitosa (L.) Beauv. Tufted Hair-grass. In bogs. Frequent. Th. 



261. D. flexuosa (L.) Trin. Common Hair-grass. Oscoda; Baldwin, to Lake 

 Superior; Keweenaw Co., O. A. Farwell. 



TRISETUM Pers. 



262. T. subspicatum (L.) Beauv. Narrow False-oat. T. subspicatum molle 

 A. Gray. Marquette, E. J. Hill; Whitney's Cat. Common. U. P. 



AVENA L. 



263. A. Smithii Porter. Smith's Oat. Melica Smithii Vasey. Keweenaw Point; 

 Isle Royale, Dr. Robbins, in Gray's Man.; woods near Sault Ste. Marie, C. E. Smith; 

 shore of Crystal Lake, Benzie Co., L. H. Dewey; Vanderbilt, Otsego Co.; Keweenaw 

 Co., O. A. Farwell. 



**264. A. striata Michx. Oat Grass. Woods. Infrequent. 



ARRHENATHERUM Beauv. 



*265. A. elatius (L.) Beauv. Tall Oat-grass. A. avenaceum Beauv. Bay Co., 

 Macomb Co. Escaped from cultivation. 



DANTHONIA DC. 



266. D. intermedia Vasey. Keweenaw Co., O. A. Farwell. 

 *267. D. spicata (L.) Beauv. Wild Oat-grass. Sterile soil. Frequent. Th. 



