30 Agrostideae 



the empty ones, membranaceous, smooth; rachilla short with a 

 few short hairs; palea half as long as its glume; awn 16-18 mm. 

 long, bent above the middle, twisted below, nearly smooth ; grain 

 oblong, about 2 nun. long. 

 Santa Monica Mountains, Haste. 



2. S. eminens Cav. Culms tufted, slender, 3-9 dm. high, pu- 

 bescent at the nodes; leaves convolute-setaceous, basal ones 

 about half as long as the culm, lower culm leaves 15-20 cm. long, 

 the uppermost 5 cm. long; ligule very minute; sheaths striate, 

 smooth; panicle 10-15 cm. long, exserted, somewhat secund, the 

 very slender short rays in pairs, few-flowered; lower glumes 

 about 10 mm. long, the upper 8 nun. long, acuminate, purplish; 

 flowering glume 5-6 mm. long, pubescent; awn about 25 mm. 

 long, slender, bent near the middle, minutely and evenly sca- 

 brous. 



Occasional on dry ridges in the chaparral belt about Pasadena and San 

 Diego. 



3. S. eminens Andersonii Vasey. Culms and leaves more 

 slender; panicle thinner ; empty glumes 6-8 mm. long; flowering 

 glume 4 mm. long, nearly cylindric ; awn 20-24 mm. long. Other- 

 wise like the type. 



Santa Monica Mountains, Haset . 



4. S. coronata Thurb. Culms 10-20 dm. high, stout, 6-8 mm. 

 thick at the base, lower culm leaves often 10 dm. long, 8-12 mm. 

 wide at base, gradually tapering to a long involute point, the 

 uppermost about 15 cm. long, nearly filiform and rigid, all slightly 

 scabrous on both surfaces and margins; ligule short; sheaths 

 rather loose, the uppermost dilated, smooth except the margins, 

 these ciliate especially at the throat; panicle 3-5 dm. long, at 

 l-'ii-th exserted and loose, narrow with erect branches; spikelets 

 Bhort-pedicelled ; empty glumes acuminate and bristle-pointed, 

 slightly scabrous on the nerves, the lower 16 mm. long, the upper 

 12 nun. long; flowering glume 10 mm. long, silky-pubescent; 



awn about 25 mm. long, slender, bent below the middle and 



minutely scabrous ; palea about half the length of its glume; 

 anthers naked. 



Frequent on dry open ridges in the chaparral belt. Santa Monica. Santa 

 Ana and San Qabrlel Mountains ; also In the foothills of San Diego County. 



5. S. Parishii Vasey. Culms tufted, leafy below, 3-4.5 dm. 

 high, rather stout; sheaths Smooth longer than the interuo.len, 



