160 FLORA OF MICHIGAN. 



1571. A. GENICULATUS, L. Floating Foxtail. 

 S. Mich., Wright Cat, ; Macomb Co. 



*1572. var. aristulatus, Torr. Th. 



In water. Frequent. 



496. SPOKOBOLUS, R. Br. DROP-SEED GRASS. RUSH-GRASS. 



1573. S. vagiiiseflorus, Vasey. C. & S. 

 Flint; Detroit, Dr. A. B. Lyons. Rare. 



1574. S. cryptaiiclrus, Gray. C. & S. 



S. Mich., Winch. Cat. ; Point Edward, River St. Clair, Macoun; Bay City, Dr. P. eal; shore of Gull 

 Lake, Augusta, Kalamazoo Co. Infrequent. 



1575. S. serotiims, Gray. 



Sandy wet places, Gray's Manual; Keweenaw Co., F. Rare. 



497. AGKOSTIS, L. [BENT-GRASS. 



^1576. A. ALBA, L. Fiorin or White Bent-Grass. Red Top. 

 Naturalized from Europe. A common pasture and meadow grass. 



* 1577. var. VULGARIS, Thurb. Red Top. 

 Naturalized from Europe. 



*1578. A. pereimaiis, Tuckerman. Thin-Grass. 

 Swamps and damp woods. S. Mich., Wright ; Macomb Co.; Hubbaraston. Infrequent. 



*1579. A. scabra, Willd. Hair-Grass. Th. 



Sterile soil. Common. _ 



* 1580. A. caiiiiia, L. Brown Bent-Grass. 

 Ann Arbor. Winch. Cat. ; Ronald, Ionia Co. Infrequent. 



498. CENTNA, L. WOOD REED-GRASS. 

 * { 1581. C. arimdiiiacea, L. Th. 



Low grounds. Frequent. 



1582. C. pemlula, Trin. 



Wet woods throughout. N. shore of Lake Superior, Agassiz. 



499. APERA, A dans. 



*1583. A. SPICA-VENTI, Beauv. 

 College lawn. 



[5OO. CALAMAOROSTIS, Adans. REED BENT-GRASS. 



*1584. C. Caiiadeiisis, Beauv. Blue-Joint. 



This is a very valuable grass to the lake settlers (U. P.), rarely of many acres in extent. It is cut and 

 stacked in August, and in winter is hauled home by sled or dog-train. It is greedily eaten by cattle. If 

 cut early, the hay is of better quality. It grows shoulder-high, so that even a small meadow furnishes a 

 great store of hay, Whitney Cat., in 1851. 



1585. C. stricta, Trin. Th. 

 Flint, Dr. D. Clark ; and northward to L. Superior, Gray, Rare. 



1586. C. Lapponica, Trin. 

 IslelRoyale, Lake Superior, T. C. Porter. 



1587. C. longifolia, Hook. Th. 

 Sand dunes along L. Michigan. S. Haven, Bailey ; Petoskey; Point au Chene, Winch. Cat.; Oscoda. 



[S. HETEROLEPIS, Gray. 



East side of La Cloche Island, Georgian Bay, R. Bell,;Canadian Catalogue.] 

 [C. LANGSDORFFII, Trin. 



Lake Superior, Maconn.] 



