154 



POACEAE 



15. Agrostis howellii Scribn. 

 Howell's Bent-grass. Fig. 342. 



Agrostis howellii Scribn. Contr. U. S. Nat. Herb. 3 : 76. 

 1892. 



Culms erect or decumbent at base, 40-60 cm. tall ; 

 blades lax, as much as 30 cm. long, 3-5 mm. wide; 

 panicle loose and spreading, scabrous, 10-30 cm. 

 long; spikelets pale, clustered toward the ends of 

 the branches ; glumes unequal, acuminate, rather 

 narrow and firm in texture, somewhat scabrous on 

 the keel, the first 3 mm. long, the second a little 

 shorter lemma acute, 2.5 mm. long, bearing from 

 near the base an exserted bent awn about 6 mm. 

 long; palea none. 



Only known from Oregon (Hood River, Bridal Veil). 

 Tulv. 



16. Agrostis hiemalis (Walt.) B. S. P. 

 Rough Hair-grass, Tickle-grass. Fig. 343. 



Cornucopiae hyemalis Walt. Fl. Carol. 73. 1788. 



Agrostis scahra Willd. Sp. PI. 1: 370. 1797. 



Agrostis scabrinscula Buckl. Proc. Acad. Phila. 1862: 90. 1863. 



Agrostis hyemalis B. S. P. Prel. Cat. N. Y. 68. 1888. 



Culms slender, tufted or scattered, 20-80 cm. tall, but 

 usually delicate; leaves usually mostly basal, the blades 

 narrow or almost setaceous; panicle very diffuse and 

 open, as much as 30 cm. long, the branches scabrous, long 

 and capillary, bearing spikelets near the extremities ; 

 glumes 1.5-2 mm. long, .acute or acuminate; lemma two- 

 thirds to three-fourths as long as glumes, awnless or rarely 

 awned, palea wanting. 



Meadows and moist places in the Transition and Canadian Zones; 

 Washington to California and nearly throughout North America. 

 July-Sept. Type locality: South Carolina. 



Agrostis hiemalis geminata (Trin.) Hi.tchc. U. S. Dept. Agr. 

 Bur. PI. Ind. Bull. 68: 44. pi. 28. f. 1. 1905. {Agrostis geminata 

 Tnn. Gram. Unifl. 207. 1824.) Differs from A. hiemalis in having 

 a smaller, less diffuse panicle, with divaricate branches; culms 

 usually less than 30 cm. high; lemma awnless within our range. 



Alpine Zone; Alaska to California. Type locality: Alaska. 



17. Agrostis longiligula Hitchc. 



Pacific Bent-grass. 



Fig. 344. 



Agrostis longiligula Hitchc. U. S. Dept. Agr, Bur. PI. Ind. 

 Bull. 68: 54. 1905. 



Culms erect, about 60 cm. tall; ligule 5-6 mm. long; 

 blades 10-15 cm. long, 3-4 mm. wide, scabrous; 

 panicle narrow, but loosely flowered, bronze-purple, 

 10-15 cm. long, the branches very scabrous; glumes 

 4 mm. long; lemma 2.5 mm. long, bearing at the 

 middle a bent exserted awn ; palea minute. 



Bogs and marshes near the coast, Alaska to Mendocino 

 County, California. Tuly-Sept. Type locality: Fort Bragg, 

 California. 



