182 



GRASSES OF IOWA. 



1. CALAMOVILFA LONGIFOLIA. 



Calamovilfa Jongifolia Hack. True 

 Grasses. 113. 1890. 



Calamagrostis longifolia Hook. Fl. 

 Bor. Am. 2: 241. 1840. Watson and 

 Coulter. Gray. Man. Bot. 651. 1890. (6 

 ed). Vasey Contr. U. S. Nat. Herb. 3: 84. 



Calamagrostis longifolia (Hook) 

 Hack. Beal. Grasses of N. A. 2: 355. 

 1896. Nash in Britton and Brown. 111. 

 Fl. 1: 167. f.382. 1896. 



DESCRIPTION. 



Loxg Leaved Reed Grass. Culms 

 2 to 6 feet (4-12 dm.) high, stout, 

 from thick, running rootstocks ; leaves 

 rigid, elongate, involute above and 

 tapering into a long, thread-like point ; 

 ligule consisting of a ring of hairs 1 

 line (2 mm.) long; panicle at first 

 close, becoming open and pyramidal, 

 the branches smooth ; glumes lanceo- 

 late, the upper as long as the flower, 

 the lower \ shorter; the copious hairs 

 more than half the length of the naked 

 flower. 



Fig. 128. Calamovilfa lonyifolia—A, 

 spikelet; b, empty glumes; c, flower. 

 (Charlotte M. King. ) 



DISTRIBUTION. 



Ioua. Sioux City (Miss Wakefield) ; Ames (Hitchcock) ; Era- 

 met County, Armstrong, 11 16 (Cratty) ; Hawarden, Sioux City, Turin, 

 187 (Pammel) ; Lyon County, Rock Rapids, 49, 39 (Shimek) ; Hull 

 (Newell) ; Hamburg (Hitchcock). 



North America. Sands, along the upper Great Lakes from Illinois 

 (Shores Lake Michigan, Chicago, Pammel; Graceland, Pammel), and 

 Michigan to Manitoba, South Dakota (Griffith, 753; Hot Springs, 

 Rydberg, 131) ; Nebraska (Long Pine, C. F. Curtiss; Ravenna, Pam- 

 mel; McCook, Pammel, 367); Kansas, Colorado (La Porte, Cache 

 La Poudre River, Pammel and Johnson, 1597 and 1742; Ft. Collins, 

 Crandall). 



