114 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



COLEANTHUS. 



1. Coleauthus subtilis (Tratt.) Seidel; Koem. & Schult. Syst. 2: 276. 1817. . 

 Schmidtia subtilis Tratt. Fl. Austr. 1 : 12. 1816. 

 Type locality: "In der gegend von Wosseck," Bohemia. 

 Range: Along the lower Columbia River. Also in Europe. 

 Speclmens examined: Klickitat County, Sii]cs(lorf2S0. 

 Zonal distribution: Humid Transition. 



CALAMAGROSTIS. 



Awn strongly geniculate; callus hairs much shorter tlian the lemma. 

 Awn great!}' exceeding the glumes. 



Panicle loose; leaves nearly as loilg as the culms \. C. hoireUii. 



Panicle dense; leaves shorter than the culms. 



Leaves soft, flat - 4. C. iireedyi. 



Leaves hard, closely involute. 



Glumes scabrous all over 2. C. purpurascem 



Glumes nearly smooth 3. C. vaseyi. 



Awn shorter than or a little exceeding the glumes. 



Glumes strongly keeled; tall seashore plant o. C. aleutica. 



Glumes not strongly keeled. 



Panicle dense, purple 6. C. ruhescens. 



Panicle dense, pale green 7. C. suTcsdorjii. 



Awn straight; callus hairs not much shorter than the lemma. 

 Panicle loose and open. 



Spikelets 4 to 6 mm. long - 9. C. Inngsdorjfii. 



Spikelets 2 to 4 mm. long. 



Glumes 2 to 2.5 mm. long 12. C. macounlana. 



Glumes 3 to 4 mm. long. 



Awn attached near the middle of the lemma 10. C. canadensis. 



Awn attached near the apex of the lemma 11. C blanda. 



Panicle narrow, rather close. 



Callus hairs copious; sheaths l)earded at summit 13. C. scribneri. 



Callus hairs sparse. 



Leaf blades soft, not rigid 14. 6'. negleda. 



Leaf blades rigid. 



, Panicle rather loose 15. C. inexpansa. 



Panicle dense, spike-like. 



Glumes subcoriaceous, ovate, acute; panicle 



4 to 6 cm. long 16. C. crassiglumis. 



Glumes membranous, acuminate, panicle 5 



to 20 cm. long 17. C hyperborea. 



1. Calamagrostis h.o"welli Vasey, Bot. Gaz. 6: 271. 1881. 

 Type locality: "Oregon." Collected by Howell. 

 Range: Washington and Oregon. 



Specimens examined: Larm River, Suhsdorf 13; Cape Horn, Piper. 



Zonal DisTPaBUTiON : Humid Transition. 



Abundant on the perpendicular clifl's of the Columbia Gap, but not known elsewhere. 



2. Calamagrostis purpurascens R. Br. in Richards. Bot. App. Fiankl. Journ. 731. 1823. 

 Calamagrostis sylvatica DC. err. det. A. Gray, Proc. Am. Acad. 6: 80. 1866. 

 Calamagrostis sylvatica americana Vasey, Contr. Nat. Herb. 3: 83. 1892. 



Type locality-: British America between Point Lake and the Arctic Sea. 



Range; Alaska to Greenland, southward to the Black Hills, Colorado, and California 



