POACEAE. 47 



erect, slender, 3-6 cm, long; panicle simple, erect, 5-10 cm. long, 

 rather narrow; spikelets oval, 6-10 mm. long, 7-13-flowered; empty 

 glumes involute, first 3 mm. long, second 4 mm. long; flowering 

 glume involute, acuminate, scabrous, 3-4 mm. long; awn 1-7 mm. 

 long; palea lanceolate, scarcely as long as the glume; stamens 2. 



Frequent throughout the chaparral belt of all the hills and 

 mountains. 



la. F. octoflora hirtella Piper. Distinguished by the usually 

 low spreading tufts, usually pubescent foliage and more especially 

 by the pubescent flowering glumes. 



The most common form in southern California. 



2. F. pacifica Piper. Culms slender, 2-5 dm. high; blades soft, 

 glabrous, loosely involute; panicle 5-12 cm. long, the lower branches 

 solitary, divaricate; spikelets 3-6-flowered; glumes glabrous, the 

 first subulate-lanceolate, 1-nerved, 4 mm. long, the second lanceolate- 

 acuminate, 3-nerved, 5 mm. long; flowering glumes lanceolate, 

 scabrous (smooth in the lowest flower), 3-7 mm. long, attenuate 

 into a scabrous awn 10-14 mm. long. 



3. F. grayi (Abrams) Piper. General habit that of pacifica; 

 blades and sheaths sometimes pubescent; spikelets 3-5-flowered; 

 all the glumes pubescent. 



Open gravelly situations; Cuiamaca Mountains and mountains 

 of Ventura County. 



4. F. reflexa Buckl. Culms very slender, 2-4 dm. high, sheaths 

 smooth or pubescent; blades narrowly linear; panicle 5-12 cm. long; 

 the rays and the spikelets all at length divergent; spikelets 1-3- 

 flowered, 5-7 mm. long; empty glumes glabrous, the first 2-4 mm. 

 long, the second 2-5 mm. long; flowering glumes glabrous or some- 

 what scabrous, 5-6 mm. long, attenuate into a scabrous awn, usually 

 5-8 mm. long. 



The most common species of this group in southern California, 

 growing in dry situations in the foothills and on the mesas. 



5. F. microstachys Nutt. Closely resembling reflexa in general 

 habit and distinguished from it by the pubescent flowering glumes. 



Occasional in the foothills about Los Angeles and Pasadena. 

 This species was the first of the group to be described and the 

 original specimens were collected near Los Angeles by Nuttall. 



6. F. bromoides L. Culms 1-3 dm. high; sheaths and blades 

 smooth; panicle dense, 5-10 cm. long; glumes unequal, the first 

 4 mm. long, the second 6-7 mm. long; flowering glume 7-8 mm. 

 long, the awn 10-12 mm. long. 



This and the two following species closely resemble each other 

 in general habit and can not be distinguished in the field without 

 close examination of the characters contrasted in the key. Much 

 less common than the next, but it has been collected in San Ber- 

 nardino and Santa Barbara Counties. Native of Europe. 



7. F. megaleura Nutt. Annual; culms slender, smooth, mostly 

 erect, 2-5 dm. high; sheaths smooth, longer than the internodes; 

 culm-leaves 3-5, erect, slender, 5-10 cm. long; panicle narrow, 



