FESTUCE^. 601 



^vell to that given by E. Hackel, excepting that the plant is a little 

 taller and the s})ike a little longer. 



19. F. amethystina L. Sp. PI. 74 (1753). 



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

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

 nodes, aiariculate; ligule a mere ciliolate ring; blades of sterile 

 shoots flaccid, conduplicate, 5-6-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. Panicle simple, secuud, narrow or spreading, 

 8-15 cm. long, lower rays usually in pairs, scabrous, flower-bearing 

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

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

 flowered, 7-8 mm. long, joint of rachilla 1.3 mm. long; first empty 

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

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

 liite, awnless, or with an awn 1-2 mm. long, subcarinate toward 

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



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



Oregon and California; also in Europe. 



Yar. asperrima Hack, ined. Plant rather taller and more slen- 

 der, panicle more slender, em^^ty glumes sharper pointed, floral 

 glume narrower, subcarinate, palea a little longer. 



Arizona. H. H. Eushy 901. 



20. F. Vaseyana Hack ined. 



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

 shoots erect, scabrid, conduplicate, filiform, 2(^-40 cm. long, 0.4-0.5 

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

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

 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-thirds. 

 Spikelets jiurplish, linear- oblong, 6-flowered, 11-13 mm. long, joint 

 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, 

 ieels scarcely scabrid. Ovary obtuse, hispidulous. 



