2 



3. DISTICHLIS TEXANA Scribn., n. comb. {Poa texana Vasey, Contrib. 



Nat'l. Herb. 1: 60, 1890; Sieglingia wrightiiYasey 1. c, 269, 1893). 

 A rather stout, rigid, glabrous, creeping perennial, the upright branches 3-6 dm. 



high, with flat leaves and densely flowered, narrow panicles 10-30 cm. long. 



Staminate spikelets compressed, 5-7-flowered ; pistillate spikelets, subterete, 



Fig. l.—PuccineUia tiimidex Scribn. a, A portion of tlie axis with the empty glumes ; />, Spike- 

 let, empty glumes removed ; c. Floret, showing a portion of the rachilla ; d, Palea ; e, Grain. 



fusiform, 12-25 mm. long. Western Texas, New Mexico (1038, C. Wright). 

 [Mexico, No. 507, E. Palmer, 1898.] 

 The dioecious habit, the character of the inflorescence, the rigid subcoriaceous 

 glumes, long-exserted styles protruding from the apex of the floret, and 

 grain inclosed in the coriaceous base of the palea, clearly connect this grass 

 with Distichlis. 



