114 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



COLEANTHXJS. 



1. Coleanthu3 subtilis (Tratt.) Seidel; Roem. & Schult. Syst. 2: 276. 1817, 

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

 Type loc.4UTy: "In dcr gegend von Wosseok," Bohemia. 

 Range: Along the lower Columbia River. Also in Europt>. 

 Specimens ex.vmined: Klickitat County, ^i/tsJor/" 280. 

 Zonal distribction: Humid Transition. 



CALAMAGROSTIS. 



Awn strongl}' geniculate; callus hairs nuich sliortcr tlmii the lemma. 

 Awn greatly exceeding th.e glumes. 



Panicle loose ; leaves nearly as long as the culms \. C. hoipellii. 



Panicle dense; leaves .shorter than the culms. 



Leaves soft, flat 4. C. tiitedyi. 



Leaves hard, closely involute. 



Glumes scabrous all over 2. C. purpurascens 



Glumes nearly smooth 3. C. vaseyi. 



Awn shorter than or a little exceeding the glumes. 



Glumes strongly keeled ; tall .seashore plant 5. C. aletitica. 



Glumes not strongly keeled. 



Panicle dense, purple 6. C. nibescetis. 



Panicle dense, pale green 7. C. sitkf»lorJii. 



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

 Panicle loose and op<'n. 



Spikelets 4 to 6 mm. long 9. C. langstlorffii. 



Spikelets 2 to 4 mm. long. * 



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



Glumes 3 to 4 mm. long. 



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



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



Panicle narrow, rather close. 



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



Callus hairs sparse. 



Leaf blades soft, not rigid 14. C neglecla. 



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 howelli Vasey, Bot. Gaz. 6: 271. 1881. 

 Type locality: "Oregon." Collected by Howell. 

 Range: Washington and Oregon. 



Speceviens examined: Larm River, Suksdorf 13; Cape Horn, Piper. 



Zonal distribution: Humid Transition. 



Abundant on the perpendicular cliffs of- the Columbia Gap, but not known elsewhere. 



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

 Calamagrostis sylvatica. DC. err. dot. A. Gray, Proo. Am. Acad. 6: 80. 1866. 

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



Type ix)CALity: British America between Point Lake and the Arctic Sea. 



Kange: Alaska to Greenland, southward to the Black Hills, Colorado, and California 



