598 POACE.B. 



blades 20-40 cm. long, obtuse or pungent, smooth, nather 3oft, 

 5-aiigled, 7 bundles of sclerenchyma, 5.7 mm. diam., tbose of the 

 culm 2 in number, of same form as those below. Panicle thin, 

 open, 8-16 cm. long, rays in pairs or single, distant, the longest 

 5-7 cm. long, bearing a few spikelets on the upper one-third. 

 Spikelets linear-lanceolate, 10 mm. long, 5-flowered, second glume 

 ovate-lanceolate, 3.2 nmi. long, 3-nerved: floral glume slender, 

 5-6 mm. long, the awn 3-0 mm. long; palea about the length of 

 its glume. Anthers 2-2.2 mm. long. 



Oregon, Hoivell d- Henderson. 



Oregon and California. 



Var. Arizonica (Vasey) Hack. ined. F. arizonirn Vasey, Cou- 

 trib. U. S. Nat. Herb. 1 : 77 (1893). 



A rather stout scabrid, pale, glaucous grass, 50-00 cm. high; 

 nodes 2 in number, the upper two-lifths of the -vay up the culm. 

 Blades of sterile shoots numerous, 30-40 cm. long, scabrous, con- 

 duplicate, in cross-section circular or oval with obtuse angles, sclei'en- 

 chyma in .") -7 rather broad bands, about 0.5 mm. diam.; ligule 

 consisting of two equal ciliate teeth, 0.7 mm. long; blades of tlie 

 culm like those of the sterile shoots; ligule symmetrically biauri- 

 culato, 1.3 mm. long. Panicle simple, erect, 10-1.') cm. long, rays 

 single, erect, rather stout, scabrid, soon branching, the longest ray 

 4-7 cm. long, bearing a few s])ikelets. Spikelets linear or linear-lan- 

 ceolate, 7-9-llowered, 10-15 mm. long; emi)ty glumes keeled above, 

 scabrid, first awl-shaped, 4-5 mm. long, second ovate-lanceolate, 5-0 

 mm. long, reaching two-thirds of the way to the apex of the floral 

 glume next above; iloral glume 6-7 mm. long, elliptical-lanceolate, 

 obscurely nerved, slightly keeled below the apex, the awu 0.5-1 

 mm. long; palea linear, 5.5-8 mm. long, 2-toothed. Anthers 3.7 

 mm. long. Ovary obovate, apex pubescent under a lens. 



Colorado, Wolfe in 1873, labelled F. ovinn var.; Arizona, Tracy. 



The plant from Flagstalf, Arizona, collected by 'I'raey, is the 

 same us one above named l)y Ilackel, and comes under F. ovina as 

 defined by him, 



Var. ingrata Hack, in herb. 



Culms 40-60 em. high. Leaves of sterile shoots scabrous, 18-20 



