FESTlTEJi. 



601 



well to that given by E. llackol, excepting that the plant is a little 

 taller and the spike a little longer. 



19. F. amethystina L. Sp. PI. T4 (1753). 

 Perennial ; culms rather slender, 50-80 cm. high, slightly genic- 

 ulate at the base, with 2-3 nodes. Sheaths shorter than the inter- 

 nodes, anriculate; ligule a mere ciliolate ring; blades of steiilo 

 shoots flacoi<l, eonduplieate, 5-G-sided in cross-section, 10-30 cm. 

 long, about 0.5 mm. diam., those of the culm 2-3 in number, the 

 upper 6-10 cm. long. Taniclo simple, socund, narrow or spreading, 

 8-15 cm. long, lower rays usually in pairs, scabrous, flowor-bcariug 

 on the upper half or two-thirds, the longest 8-10 cm. long. Spike- 

 lots linear-lanceolate or oval, green or tinged with violet, 3-7- 

 flowered, 7-8 mm. long, joint of iiu'.ulla 1.3 mm. long; first empty 

 glume lanceolate, 3 mm. long, second linear-lanceolate, about 5 mm. 

 lou<r; floral glume scarious, lanceolate-oblong, 5-6 mm. long, invo- 

 lute, awnless, or with an awn 1-2 mm. long, subcarinat') toward 

 the apex; palea linear, 2-toothcd, scabrid on the keels. 

 Oregon, Howell for U. S. Dept. Agricul. 

 Oregon and California; also in Europe. 



Var. asperrima Hack. incd. Plant rather taller and more slen- 

 der, panicle more slender, empty glumes sharper pointed, floral 

 trlume luu-rowcr. subcarinate, palea a little longer. 

 Arizona. //. //. Unshy 901. 

 20. F. Vaseyana Hack ined. 



A tufted erect perennial. 30-80 cm. high. Blades of sterile 

 shoots erect, scabrid, eonduplieate, filiform, 2(»-40 cm. long, 0.4-0..-) 

 mm. diam., those of tlie culm 2 in number (the upper node below 

 the middle of the culm), filiform. 10-30 cm. long; ligule ciliatc, 

 symmetrically biauriculate, 1 mm. long. Panicle linear-lanceolate, 

 strict, 9-12 cm. long, rays scabrous, single, soon branching, the 

 longest 4-7 cm. long, bearing 2-5 spikelets on the outer two-tbii'ds. 

 Spikelets purplish, linear oblong, 6-flowered, 11-13 mm. long, jt)int 

 of rachilla 1.5 mm. long; first empty glume awl-shaped. 4 mm. 

 long, second linear-lanceolate, 6 mm. long: floral glume oval- 

 lanceolate, 6-7 mm. long, the awn 2 mm. long; palea 7 mm. long, 

 keels scarcely scabrid. Ovary obtuse, hispid ulous. 



