128 FLSiUCEAE 



Hlvle none: flowering glume 



"obscurely 5-nerved. ''■>■ Plxcineixia 



Flowering glumes acute, point- 

 ed or more commonly awn- 

 ed at the apex. 'i<5- !• estica 



Stigmas plainly arising from be- 

 low the apex of the ovary, 

 the latter tipped by a hairy _ ,, ,,, 



cushion. ''• " ■ 



51. PAPPOPHORUM Sfhreb. 



I. Pappophorum wrighlii S. Wats. On the !. wer, drier and 

 rockier ri(\oe> a...' n or, lai. . ot the ,~o„thtrn ,nrt of the State, 

 in the h'oiioraii Zone.-. 



52. SCHLEROPOGON Phil.ippi. False Needle Grass 

 I. Schleropogon brevifolius Phillippi. On the mesas of 



the southern part <.f the Stale in the L.>wer Sonoran Zone. 



53. Phragmites Trin Carrizo. 



I. Phragmites phragmites (L.) Karst. The common reed 



•grass Jour.l u. wit >Mi! in .h,wly runniii- or staonnn. w.iter at the 

 lower levels. th..usih sometimes as high as the Tran.-,itio.i Zone: 

 mostly in the Lower Sonoran Z )ne. 



Annoo uor.ax [,. is an irtrodiiccd species of reed or cane- 

 like grass resembling the preceding but much larger. It is in cul- 

 tivation in the lowtr Kio Giarde Valley. 



54. MUNROA Torr. 



I. Munroa SquarrOSa (Xult.) Ti rr. A common annual of 

 short dinatiou with incouspicaous iuf'orescence, found on the 

 sand hills ard mesas of the LoW( v Sonoran and to some extent in the 

 Upper Sonoran Zone. 



55. DASYCHLOA Willd. 



I. Dasychloa pulchella (H. B. K.) Willd. A common spec- 

 ies of the very driest and rockiest of the mesas of the Lower 

 -Sonoran Zoiie. 



