WOOTON AND STANDLEY FLORA OF NEW MEXICO. 89 



broad at the base, subcoriaceous, obscurely many-nerved, unequally divided into 9 

 to 23 awnlike lobes; palea rather broad, 2-keeled near the margins. 



1. Pappophorum wrightii S. Wats. Proc. Amer. Acad. 18: 178. 1883. 



Type locality: Western Texas or southern New Mexico. 



Range: Western Texas and southern Arizona and southward. 



New Mexico: Bear Mountain; Kingston; Cerrillos; Socorro; Dog Spring; Las 

 Cruces; Organ Mountains; Carrizozo. Dry hills, in the Lower and Upper Sonoran 

 zones. 



52. SCXEROPOGON Phil. False needle grass. 



Perennial, cespitose, often stoloniferous grasses with nearly simple panicles; spike- 

 lets unisexual, the two kinds unlike, 2 to many-flowered; staminate spikelets many- 

 flowered, the glumes narrow, acute, 3-nerved, awnless, unequal, the lemmas some- 

 times minutely 3-toothed at the apex, the palea narrow and rigid; stamens 3; pistillate 

 spikelets 1 to many-flowered, the glumes persistent, very unequal, the lemmas rigid, 

 narrow, the 3 nerves produced into very long slender divergent twisted awns; styles 

 distinct, elongated; grain free, narrow, elongated. 



1. Scleropogon brevifolius Phil. Anal. Univ. Chile 34: 205. 1870. 



Type locality: Chile. 



Range: Arizona and western Texas to Mexico and South America. 



New Mexico: Carrizo Mountains; Hillsboro; Albuquerque; Socorro; Tucumcari" 

 Dona Ana Mountains; Organ Mountains; Deming; Carrizozo; White Mountains; Pecos 

 Valley. Dry hills and plains, in the Lower and Upper Sonoran zones. 



Very common on the mesas of southern New Mexico and of considerable importance 

 as a range grass. 



53. PHRAGMITES Trin. Carrizo. 



Tall reedlike perennial with stout leafy culms and large terminal panicles; spike- 

 lets loosely 3 to 7-flowered; rachilla jointed above the glumes and between the florets 

 clothed with long silky hairs; lowest floret staminate or neutral, the others fertile; 

 glumes unequal, lanceolate, acute, shorter than the florets; lemmas glabrous, very 

 narrow, acuminate; grain free. 



1. Phragmites phragmites (L.) Karst. Deutsch. PI. 379. 1880-3. 



A hi ado phragmites L. Sp. PI. 81. 1753. 



PkragmiU i communis Trin. Fund. Agrost. 134. 1820. 



Type locality: "Habitat in Europae lacubus fluviis. " 



Range: Nearly throughout the United States and in Mexico; also in Europe and 

 Asia. 



New Mexico: Farmington; Cimarron; Canada Uamosa; Copper Mines; Mimbres 

 River; Mesilla Valley; Round Mountain, Roswell. In wei ground, especially in 

 river valleys, in the Lower and Upper Sonoran zones. 



54. ARUNDO L. 



Tall (2 to :'■ meters or more) perennial with Sal Leaves and ample terminal panicli i; 

 spikelets 2 to many-flowered; rachilla jointed above the glumes and between the 

 florets, smooth; florets crowded, fertile, or the upper or lower staminate; glumt 

 i. a, row, subequal, 3-nerved, smooth, acute or acuminate, about the length of the spike- 

 let; lemmas membranaceous, 3-nerved, 2-toothed at the apex, mucronate between 

 the teeth, long-pilose on the back; (idea hyaline, 2-keeled; grain smooth, free. 



1. Arundo donax L. S|>. PI. 81. L758. GlANT Bl i D 



Type locality: "Habital in EUspanis Galloprovincda 

 Range Western Texas and southern New Mexico to Mexico probablj aatui 



ni be Old World. 



