nu 



I'OACEiE 



hyulino, entire, eiuurginiito or S-tootlicd, the midnervo terminiitinf» 



in ii inucro or sliort awn; pult-a S'jjircely shorter thun its gltiinc, 



liyiiliiHi, with 2-wing('cl ciliate kecds. Stamens ',i. (J rain oblon^% 



liard, enclosed, but not adherent. Soft u})rigl»t perennial grasses 



with Hat leaf-blades. Haeenies simple, sliortly pedicellate, lax. 



Spikelets large, distant, erector jicndulous on short pedicels. 



'IMu'rc are three species; one arctic, two in (!alifornia. 



1. P. Californicum (Xees) Henth. ; Vasey, (Jrass. U. S. 40 



(18.*)')). Lopliorhhi'tKi ('(ili/ornirn Xees, 1. c. 



(hilins 4(i-()() cm. high; nodes con. "ted and dark-(;ol<)red. 



Sheaths shorter or as long as (he interiiodcs; ligule thin, mm. 



long; l)lades 10-15 (!ni. long (the iipjtt'r 15 5 cm.), 4 mm. wide. 



Ttaeerae llexuose, ir)-2() cm. long, containing (!-]•.' spikelets. Spike- 



,,.. lets l.r)-'.'.5 cm. long, on flattened pi'dicels, ;}-(» mm. 



W^ [j^ long, subiu'ect or spreading; empfv ghlm(^s shining, 



second 15-iierved, notched at the a])((X ; Moral glume 



very scabrous. ;')-(') mn». long, the ;5 central m-rves 



uniting abovt;, the awn 8-10 mm. long, lateral awns 



very short; ])alea curved, (Uineate, .") mm. long, the 



winged keels toothed. 



California, llolaiulvr \\, /foiif/Iiis \\\ IHlV.l. 



lllm Wiw liolandcr believed it worthy of cultivation as a 



forage-plant. 



2. P. refractum ((«ray) Uenth. I'roc. Am. Acad. 



402 (1S7;.'). Ldjihirhhvna rvfrarta A. (J ray, I'roc. 



Am. Acad. 8:40!) (18r2). 



Culmsstout, l)()-r^*0 cm. high. Sheaths scabrous 



or smooth; ligule obtuse, 15 -0 mm. long; lower blades 



flat, about 20 cm., tin; upper .'5 5 cm, long. (J s nim. 



wide. Kaehis vt^y slender, llexuose. •.'()-;5('cm. long. 



Spikeli'ts refracteil ]»y the curving of the pedicels, 



Fio. I04.--Pte«- 2.r)-;5.,") cm. long, nitlier looselv flowered ; floral 

 ro])oiji}nr(fr(te- 



turn. J,8i)iUo- glume T-Smm. long, scabrous, oblong, apex truncate- 



i niiit'ii- r'pis^'''^*'^"'' ''^^'' ''^''•'''' '•""•'•huig; palea 7 mm. long, the 

 til. (Scribner.) wings ending each in a blunt tooth. 

 Oregon, Hall ();>(), lloirvll. 



