Agrostideae 27 



smaller or rudimentary, fifth subtending a palea similar 

 to itself and a perfect flower. Stamens 3. Styles dis- 

 tinct. Grain oblong free smooth, enclosed in the 

 glumes. 



1. P. minor Retz. Culms simple or somewhat branched, 4-10 

 dm. high, erect or decumhent at the base, smooth; sheaths usu- 

 ally shorter than the internodes more or less inflated ; ligule 

 rounded, 2-6 mm. long; blades 5-15 cm. long, 4-10 mm. wide, 

 smooth or faintly scabrous; spike 2-8 cm. long, dense; spikelets 

 5 mm. long; empty glumes more or less scabrous, 3-nerved, 

 wing-keeled; third and fourth glumes subulate, hairy; fifth 

 twice as long as the third and fourth, acuminate, pubescent with 

 long appressed hairs. 



Very common in all our valleys in rather moist or heavy soil. March- 

 May. 



2. P. Lemmoni Vasey. Culms rather slender, 3-10 dm. high, 

 smooth; sheaths smooth; blades 3-5 mm. long, acuminate; 

 ligule 6 mm. long; spike dense, nearly cylindric, sometimes 

 slightly interrupted or lobed ; empty glumes 4-5 mm. long, acute 

 or acuminate; second pair about 1 mm. long; flowering glume 

 lanceolate, acuminate, about equaling the empty glumes, pubes- 

 cent; palea nearly as firm in texture as its glume and a little 

 shorter. 



Rather local. First collected near Santa Cruz by Lemmon. Collected by 

 the author at Inglewood, so far the only locality known for it in southern 

 California. 



Tribe 4. AGROSTIDEAE. BENT-GRASS TRIBE. 



Spikelets all hermaphrodite, 1-flowered, with 3 glumes, 

 the first 2 empty or rarely wanting/usually exceeding or 

 equaling the third or flowering glume in length ; 

 rachilla sometimes prolonged behind the palea into a 

 naked or plumose bristle. Palea usually 2-nerved. 



