Barley Tribe 63 



Empty glumes 2 or sometimes 3, many-parted from near 

 the base or bifid or subulate and entire, awned ; flower- 

 ing glumes terminating in a single awn or trifid or 

 3-awned. Palea as long as its glume, entire, bidentate 

 or 2-awned. Stamens 3. Styles short. Grain adherent 

 to its glume and palea, hairy at the summit. 



* Empty glumes deeply cleft into 3-11 or more sectaceous awns. 



l.S. jubatum Smith. Culms erect, 6-9 dm. high, smooth; 

 lower sheaths hirsute, the upper minutely pubescent or sparsely 

 hirsute, becoming smooth ; ligule 1 mm. long; leaves 10-18 cm. 

 long, 3-5 mm. wide, strigose-pubescent throughout and sparsely 

 hirsute above, midnerve prominent beneath ; spike 1-2 dm. long, 

 densely flowered ; empty glumes 4, 3-many-parted from about the 

 middle, the lobes setaceous, mostly 8-10 cm. long; spikelets 2-4- 

 flowered, the second hermaphrodite, the other sterile or the upper 

 staminate; flowering glume linear-lanceolate, 8-10 mm. long, 

 smooth below, sparsely scabrous above, 5-nerved, trifid at the 

 apex, lateral lobes setaceous, the middle prolonged into a slender 

 scabrous awn, 8-12 cm. long; internodes of the rachis 5-7 mm. 

 long, glabrous. 



Ojai Valley, Hubby; Coldwater Canyon, San Antonio Mountains, growing 

 under pines at about 7000 feet altitude. 



2. S. multisetum Smith. Culms tufted, 3-5 dm. high, gla- 

 brous or minutely strigose-pubescent ; sheaths scarious on the 

 margins, strigose-pubescent and hirsute ; ligule very short ; leaves 

 5-10 cm. long, erect or ascending, linear, pungently pointed, 

 sparsely hirsute on the back, scabrous on the margins, hirsute and 

 scabrous above ; spike erect, 5-8 cm. long, usually reddish ; usually 

 only 1 spikelet at each joint fertile; empty glumes 3-rnany-parted 

 nearly to the base; awns slender, scabrous, mostly 2-6 cm. long; 

 lowest flowering glume of the sterile spikelet subulate, resembling 

 the segments of the empty glumes; flowering glume of fertile 

 spikelet 8-9 mm. long, smooth below, keeled and scabrous above, 

 3-awned, the middle awn 5-6 mm. long ; palea equaling its glume ; 

 internodes of the rachis 4-5 mm. long, smooth, scabrous on the 

 margins, compressed. 



Rather common on mesas and grassy hills. March-May. 



