FESTUCE^. 687 



in which the awns were 5-7 mm. long were called var. arisfulata 

 by Torrey, but florets are often long-awned, wliile otliers on the 

 same plant are sliort-awned. 



Massachusetts, Dr, Cooley; Michigan, Dr. Cooley, Dr. ('lark, 

 Wheeler, Deal 133; Illinoisj Bectl 132; Minnesota, Holzinger 16; 

 Iowa, HilchcocJc; Colorado, Cassidy; Montana, Anderson 22; 

 Texas, Beverchon 1211, S. Jenney, Jones 3752, Nealley; Washing- 

 ton, Lake; Oregon, Howell. 



Dry barren land, New England and Canada to Florida and the 

 Pacific. 



4. F. RiGiDA (L.) Kunth. Pier. Gram. 1:129 (182*J). Poa 

 rigida L. Cent. PI. Ear. 1 : 5 (1755). 



Culms slender, geniculate or erect, 10-40 cm. higli. Slieaths 

 smooth, shorter than the internodes; ligule about 3 mm. long; 

 blades 3-4 in number, smooth,' 5-15 cm. long, about 2 mm. wide. 

 Panicle oblong, 4-9 cm. long, rays single, large, stiff, triquetrous, 

 diverging, branching, the longest 1.5-2 cm. long. Spikelets linear- 

 lanceolate, 5-12-flowered, 7-10 mm. long, joint of rachilla 1 mm. 

 long; empty glumes ovate, oblong, acute or obtuse, first 1.5 mm. 

 long, second 1.5-2 mm. long; floral glume scabrid, ovate-elliptical, 

 2.5-2.7 mm, long; palea nearly as long as its glume, short-ciliate 

 on the keels, 2-toothed. 



Introduced on ballast from Europe. 



5. F. Richardsonii Hook. Fl. Bor. Am. 2: 250, /. 230 (1840). 

 A tufted brown geniculate perennial, 15-20 cm. high. Blades 



of the sterile shoots flaccid, 3-8 cm, long; ligule very short; blades 

 of the culm flat, the upper 10-15 mm. long, 2 mm. wide. Panicle 

 dense, more or less interrupted, 3-4 cm. long; spikelets 6-12 in 

 number, approximate, ovate on sliort pedicels, densely pilose. 

 Spikelets 3-4-flowered, 6-7 mm. long; empty glumes oblong-ovate, 

 unequal, obtuse; floral glume broadly ovate, yellowish purple, 5-6 

 mm. long, acuminate or with a short awn; palea hirsute on the 

 keels. 



Arctic coast, Alaska. 



6. F. confinis Vasey, Bull. Torr. Club, 11:126 (1884). 



A tufted Stout rigid, li'dit-green }>erennial, 40-120 cm. high. 



