62 Hordeae 



spike 9-18 cm. long, about 1 cm. wide or less; rachis puberulent 

 and with a narrow ciliate wing; spikelets in 2's' or 3's, rather dis- 

 tant below, crowded in the middle, often single above, 4-6-flower- 

 ed ; empty glumes 8-10 mm. long, subulate, scabrous on the 

 nerves above; flowering glumes 6-10 mm. long, 3 mm. wide, 9- 

 nerved, glabrous; palea about equaling its glume, scabrous on 

 the keels. 



Common in low ground, especially in the coast valleys. 



3. E. Orcuttianus Vasey. Culms usually several from short 

 rootstocks, 5-10 dm. high, slender, leafy; sheaths smooth; ligule 

 a short ciliate ring; leaves erect, 15-25 cm. long, 3-8 mm. 

 wide, scabrous on the margins; spike 10-15 cm. long, erect r 

 loosely flowered ; spikelets 2 or frequently only 1 at each 

 joint, 5-7-flowered; empty glumes linear-lanceolate, rigid, long- 

 pointed, 8-12 mm. long; lower flowering glumes 8-10 mm. long, 

 lanceolate, acuminate, rounded and smooth on the back, scabrous 

 at the' apex, 5-nerved on the inside, the upper ones shorter and 

 more scabrous ; palea %-% shorter than its glume, ciliate on the- 

 keels. 



Elysian Park, Davidson; near San Diego, Orcutt. Closely related to the 

 preceding and possibly only a form of it. 



4. E. glaucus Buckl. Culms erect and tufted, from stolonifer- 

 ous rootstocks, 6-10 dm. high, smooth; sheaths smooth or mi- 

 nutely scabrid ; ligule about 0.5 mm. long, entire ; leaves flat, sca- 

 brid on both sides, 6-10 mm. wide, the lowest about 2 dm. long; 

 spike linear, erect, 6-15 cm. long, 5-8 mm. wide; spikelets usual- 

 ly in 2's, sometimes in 3's, 3-4-flowered ; empty glumes 8-12 mm. 

 long; awn-pointed, scabrid on the 2-4 prominent nerves; flower- 

 ing glumes scabrid above, 9-12 mm. long, tapering into a straight 

 awn 7-14 mm. long; palea scabrid, 9-10 mm. long, emarginate; 

 rachis scabrid on the margins. 



Frequent in open shady places in the upper portions of the chaparral belt 

 and in the pine belt. San Gabriel and Santa Ana Mountains. June-July. 



42. SITANION Rafin. 



Csespitose perennials, with usually flat leaves and 

 bearded spikes. Spikelets usually 2 (1-3) at each joint 

 of the articulate rachis of the spike, 2-several-flowered. 



