52 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



1. Savastana alpina (Liljebl.) Seribn. Mom. Torrey Club 5: 34. 1804. 

 Aim alpina Liljebl. Utk. Svensk Fl. ed. 2. 41. 1798. 



Hierochloe alpina Room. & Schult. Syst. Veg. 2 : 515. 1817. 



A slender, glabrous, erect grass 15 to 45 cm. bigh with narrow, flat loaves, and con- 

 tracted panicles 1.5 to 3 cm. long; glumes subequal, glabrous; lemmas ciiiate on the 

 margins, the first bearing an awn about 2 mm. long, the second with a more or less 

 bent and twisted awn about tj mm. long. 



Seward Peninsula and the islands of Bering Sea to the Shumagin Islands and White 

 Pass in southeastern Alaska, and eastward and southward to Greenland and Ihe moun- 

 tains of New England and New York; also in northern Europe and Asia. 



2. Savastana odorata(L.)Scribn. Mem. Torrey (Tub 5: 34. 1894. Vanilla grass. 

 ffolcus odomtua L. Sp. PI. 1048. 1753. 



Hierochloe borealis Roem. & Schult. Syst. Veg. 2: 513. 1817. 



A slender stoloniforous grass, 30 to CO cm. high with short culm loaves and brownish, 

 open panicles 4 to 10 cm. long; spikolots 4 to 6 mm. long; glumes glabrous, subequal; 

 lemmas hairy, acute, not awned. The flat leaves of the sterile shoots are 10 to 30 cm. 

 long. 



In damp soil, Seward Peninsula and the Aleutian Islands to southeastern Alaska; 

 also on the upper Yukon, thence to Newfoundland, New York, and Minnesota, and 

 in the Rocky Mountains to Mexico. 



3. Savastana pauciflora {R. Br.) Scribn. Mem. Torrey Club 5: 353. 1894. 

 Hierochloe pauciflora R. Br. Suppl. App. Parry's Voy, 293. 1824. 



A slender, erect, glabrous species, 10 to 20 cm. high, with short loaves, small, few- 

 flowered panicles, and awnless spikolots; sheaths mostly at the base of the culm, over- 

 lapping; basal leaves 2 to 5 cm. long or less; spikolots few, 3 to 4 mm. long; lemmas 

 scabrous, erose-truncate, the third shorter than the others, obtuse, villous at the apex. 



Seward Peninsula and the Pribilof Islands; also in the arctic region of both North 

 America and Asia. 



Specimens examined: Port Clarence, tundra near Teller Reindeer Station, Wal- 

 pole 1781; St. Paul Island, Bering Sea, in marshes, Macoun in 1892. 



2. STIPA L. 



Stipa L. Sp. PI. 78. 1753. 



Spikelets 1-flowered; rachilla articulated above the glumes and produced below 

 the lemma into a strong, bearded, obconical and sharp-pointed callus; glumes thin 

 subequal, acuminate, exceeding the lemma, this narrow and closely rolled around the 

 flower, and terminating in a twisted, geniculate, simple awn articulated with its sum- 

 mit. Tufted perennial grasses with narrow involute leaves and usually open panicles. 



1. Stipa comata Trin. & Rupr. Mem. Acad. St. Peters!). VI. Sci. Nat. 5: 75. 1842. 



Porcupine grass. 



An erect, cespitose species, 30 to 90 cm. high, with involute leaves and loosely flow- 

 ered panicles 15 to 25 cm. long; glumes long attenuate pointed, about 24 mm. long; 

 lemma thinly pubescent, about 12 mm. long, bearing a slender flexuous awn 8 to 10 

 cm. in length. 



In dry or sandy soil in the upper Yukon valley, thence to California and Nebraska. 



Specimen examined: Five Finger Rapids, Yukon River, Tarleton 85. 



3. PHLETJM L. 



Phleum L. Sp. PI. 59. 1753. 



Spikelets 1-flowered, hermaphrodite; rachilla articulated above the glumes, not 

 prolonged beyond the floret; glumes 2, cornpressed-carinate, usually ciiiate on the 

 keels and abruptly mucronate-pointed ; lemma shorter than the glumes, thin, trun- 

 cate, awnless. Annual or perennial grasses with simple erect culms and dense cylin- 

 drical or oblong spike-like panicles. 



