No. 5. 

 PHALARIS LEMMONI Vasey, Contr. Nat. Herb. iii. 42. 



Plant annual, with few, slender roots. 



Culm erect, simple, slender, terete, smooth, naked above, 12 to 20 inches high. 



Leaves from the base, with loose, smooth sheaths, and narrow, flat, slightly hispid 

 blades, 3 to 5 inches long. Leaves of culm about 4; sheaths striate, smooth, close, 

 shorter than the in tern odes; blades flat or folded, hispidulous, acute, erect or but 

 slightly spreading, 1 to 3 inches long; ligule membranaceous, obtuse, 3 lines long. 



Inflorescence a close almost spike-like panicle, 1£ to 3 inches long and £ inch wide; 

 branches mostly alternate, racemose, | inch long, crowded with nearly sessile spikelets. 



Spikelets obovate, 1-flowered, 2 to 2£ lines long ; empty glumes 4 ; outer pair equal, 

 ovate, acute, carinate but not winged, slightly hispidulous on the three prominent 

 nerves, 2 to 2 J lines long ; inner pair inconspicuous, hairy scales appressed to the lower 

 angle of the perfect floret; floral glume broadly ovate, acuminate, clothed throughout 

 with short, appressed, brittle hairs, obscurely nerved, coriaceous, completely enclosing 

 the grain, 1£ lines long ; palet ovate, acute, minutely pubescent above, ciliate at apex, 

 obscurely 2-nerved, 1 line long. 



Plate V; a, spikelet with empty glumes slightly spread; />, outer empty glumes; 

 c, floret and inner empty glumes; d, inner empty glumes; e, palet. 



California and Arizona. 



