118 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
17b. Calamagrostis hyperborea americana Vasey; Kearney, U.S. Dept. Agr. Div. 
Agrost. Bull. 11: 41. 1898. 
Deyeuxia neglecta americana Vasey, Macoun. Cat. Can. Pl. 4: 206. 1888, nom. nud. 
Calamagrostis stricta Gray, Proc. Am. Acad. 6: 79. 1866 in part, not Koel. 
Type vocarity: “Donald, Columbia Valley,’ British Columbia. Collected by Macoun, 
RanaeE: British Columbia to Hudson Bay, southward to Oregon, Colorado, and Vermont. 
SPECIMENS EXAMINED: Brewster, (riffiths & Cotton 267; Conconully, Griffiths & Cotton 
271; Stehekin, Griffiths & Cotton 240; Ephrata, Griffiths & Cotton 470. 
ZONAL DISTRIBUTION: Arid 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. A. aequivalvis. 
Spikelets 2 mm. long, usually pale. -...-...-.-.-.-.---------- 2. A. thurbervana. 
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, A. humilis. 
Provided with rootstocks; culms erect, rather tall...... 5, A. alba. 
Palet wanting or minute and nerveless. 
Plant with rootstocks..........-.-------.-+---0-------- 6. A. pallens. 
Plant tufted, without rootstocks. 
Panicle narrow, rather close. 
Lemma with exserted awn. 
Glumes awn-pointed.-.......-------------- 7. A. microphylla. 
Glumes merely acute. ........----.---------- 8. A. ampla. 
Lemma awnless or the awn included. 
Panicle 5 to 30 cm. long; tall lowland plant.... 9. A. exarata. 
Panicle 3 to 6 cm. long; low alpine plant... . -. - 10. A. rossae. 
Panicle open, loose. 
Inflorescence very diffuse; herbage scabrous... . - - . 11. A. hyemalis. 
Inflorescence not diffuse. 
Plants 10 to 30 cm. high; panicle usually pale. . 12. A. idahoensis. 
Plants 30 to 60 cm. high. 
Panicle pyramidal, dark purple... -...-. 13. A. oregonensis. 
Panicle elongated, oblong............... 14. A. schiediana. 
1. Agrostis aequivalvis Trin. Mem. Acad. St. Petersb. IV. 67: 362. 1841. 
Agrostis canina aequivalvis Trin. in Bong. Mem. Acad. St. Petersb. VI. 2: 171. 1832. 
Type LocaLity: Sitka. 
Rance: Alaska to Oregon. 
SPECIMENS EXAMINED: Nason Creek, Sandberg & Leiberg 676; Mount Adams, Suksdorf 
194. 
ZONAL DISTRIBUTION: Hudsonian? 
2. Agrostis thurberiana A. S. Hitchcock, U.S. Dept. Agr. Bur. Pl. Ind. Bull. 68: 23. 
1905. 
Type Locauiry: “In wet places on mountains, Skamania County, Wash.”’ Collected by 
Suksdorf. 
Rance: British Columbia to California and Utah. 
SPECIMENS EXAMINED: Mount Adams, Suksdorf 24, 194; Nason Creek, Sandberg & Lei- 
berg 676; Mount Rainier, Flett 1955. 
