Fescue Tribe 45 



mens 2-3. Styles distinct, short. Grain free, loosely en- 

 closed in the glume and palea. 



1. E. major Host. Culms 2-6 dm. high, erect or decumbent 

 at base, usually branched, smooth; sheaths shorter than the in- 

 ternodes, sparingly pilose at the throat, otherwise smooth ; blades 

 5-15 cm. long, 2-6 mm. wide, flat, smooth beneath, scabrous 

 above; panicle 5-15 cm. long, the branches spreading or ascend- 

 ing, 2-4 cm. long; spikelets 8-35-flowered, 5-15 mm. long, about 

 3 mm. wide, flat; empty glumes obtuse, 2-2.5 mm. long, lateral 

 nerves prominent. 



Along ditches and streams about Los Angeles and Santa Ana. 



2. E. pilosa (L.) Beauv. Annual, 4-5 dm. high, somewhat tuft- 

 ed, smooth; sheaths smooth, shorter than the internodes; leaves 

 flat, 8-15 cm. long, smooth ; panicle spreading, 15-30 cm. long ; rays 

 decompound, smooth or slightly bearded in the axils; spikelets 

 on pedicels 4-8 mm. long, narrowly linear, 5-8 mm. long, 7-20- 

 flowered, dark lead color or purplish; empty glumes lanceolate, 

 first 1.5 mm. long, second 2 mm. long, flowering glume ovate, 

 1.5-1.8 mm. long; palea about equaling its glume, scaberulouson 

 the keel; grain 1 mm. long. (E. Orcuttiana Vasey.) 



Occasional along irrigating ditches about San Bernardino and Santa Ana. 



28. KOELEBIA Pers. 



Tufted annual or perennial grasses with flat or setace- 

 ous leaves and mostly spike-like panicles. Spikelets 2- 

 5-flowered. The 2 outer glumes empty, narrow, unequal, 

 acute, keeled, scarious on the margins ; flowering glumes 

 3-5-nerved. Palea hyaline, acute, 2-keeled. Stamens 3. 

 Styles very short. Grain free, enclosed in the glume 

 and palea. 



1. K. cristata (L.) Pers. Perennial; culms erect, tufted, 3-7 

 dm. high; sheaths smooth, equaling or shorter than the inter- 

 nodes; basal leaves %~/4 as l n g as the culms, culm leaves 2-4, 

 6-12 cm. long, all glabrous; panicle spike-like, somewhat lobed 

 and interrupted, 5-12 cm. long ; axis and branches soft-pubescent ; 

 spikelets 2-4-flowered, 4-5 mm. long ; first glume 2.5-3.5 mm. long, 

 second 3-4 mm. long; flowering glume equaling the second empty 

 one. 



Common on grassy hills. 



