118 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



17b. CalamagTOstis hyperborea americana Vasey; Kearney, U. S. Dept. Agr. Div. 

 Agrost. Bull. 11: 41. 1898. 



Deyeuxia neglecta americana Vasey, Macoun. Cat. Can. PI. 4: 206. 1888, nom. nud. 



Calamagrostis stricta Gray, Proc. Am. Acad. 6: 79. 1866 in part, not Koel. 



Type locality: "Donald, Columbia Valley," British Columbia. Collected by Macoun. 



Range: British Columbia to Hudson Bay, southward to Oregon, Colorado, and Vermont. 



Specimens examined: Brewster, Griffiths & Cotton 267; Conconully, Griffiths <& Cotton 

 271; Stehekin, Griffiths & Cotton 240; Ephrata, Griffiths <& Cotton 470. 



Zonal distribution: Aiid Transition. 



Calamagrostis stricta Nutt. is listed in Cooper's Report, page 70. The specimen 

 seems to be lost, but it was certainly of some other species. 



AGROSTIS. 



Rachilla prolonged behind the palet. 



Spikelets 3 mm. long, usually purple 1. ^4. aequivalvis. 



Spikelets 2 mm. long, usually pale 2. A. thurbenana. 



Rachilla not prolonged behind the palet. 

 Palet evident, 2-nerved. 



Plant spreading by creeping short-leafed stolons 3. A. depressa. 



Plant without stolons. 



Tufted ; a dwarf high-alpine species 4. ^4. humilis. 



Provided with rootstocks; culms erect, rather tall 5. ^4. alba. 



Palet wanting or minute and nerveless. 



Plant with rootstocks 6. ^4. paUens. 



Plant tufted, without rootstocks. 

 Panicle narrow, rather close. 

 Lemma with exserted awn. 



Glumes awn-pointed 1. A. microphyUu. 



Glumes merely acute 8. ^. ampla. 



Lemma awnless oi the awn included. 



Panicle 5 to 30 cm. long; tall lowland plant 9. ^4. exarata. 



Panicle 3 to 6 cm. long; low alpine plant 10. ^4. rossae. 



Panicle open, loose. 



Inflorescence very diffuse; herbage scabrous 11. ^4. hyemalis. 



Inflorescence not diffuse. 



Plants 10 to 30 cm. high; panicle usually pale. . 12. ^4. idahoensis. 

 Plants 30 to 60 cm. high. 



Panicle pyramidal, dark purple 13. ^4. oregonensis. 



Panicle elongated, oblong 14. .4. schiediana. 



1. Agrostis aequivalvis Trin. Mem. Acad. St. Petersb. IV. 6^: 362. 1841. 

 Agrostis canina aequivalvis Trin. in Bong. Mem. Acad. St. Petersb. VI. 2: 171. 1832. 

 Type locality: Sitka. 



Range: Alaska to Oregon. 



Specimens examined; Nason Creek, Sandherg & Leiberg 676; Mount Adams, SvJcsdorf 

 194. 



Zonal distribution: Hudsonian? 



2. Agrostis thurberiana A. S. Hitchcock, U. S. Dept. Agr. Bur. PI. Ind. Bull. 68: 23. 



lfK).5. 



Type locality: "In wet places on mountains, Skamania County, Wash." Collected by 

 Suksdorf. 



Range: British Columbia to California and Utah. 



Specimens examined: Mount Adams, Suksdorf 24, 194; Nason Creek, Sandbeiy c& Lei- 

 berg 676; Mount Rainier, Flett 1955. 



