ZOYSIE.E. 



69 



apex of another vein becomes a mucronate awn ; floral glume 

 3-nervecl for one- third its length, broadly oval, then abruptly con- 

 tracted, eraarginate ; palea narrow. 



Arizona, Lemmon for Nat. Mus. 415 ; Mexico (Jalisco), 

 Palmer 296. 



Var. longifolia Vasey. Leaves thin, numerous, erect, 8-12 

 cm. long. 



Arizona, Wheeler's Survey 695; Lower California, Palmer 34:7. 



Var. ciliatus Scribn. ined. Spikes about 3 cm. long ; empty 



Fig. W.—Hilaria ceneJiroides. A, B, C, spikelets. (Scribner.) 



glumes above strongly ciliate, awns not extending beyond the lobes 

 of the glumes. 



Mexico, Pringle 3128. 



Var. Texana Vasey. Leaf-blades mostly 1-3 cm. long ; spikes 

 narrower. 



Texas, Eererclion 1173, Jenny and Nealley for Nat. Mus. 



3. H. mutica (Buck.) Beuth. Jour. Linn. Soc. 19 : 62 (1881). 

 PleurapUs mutica Buckl. Proc. Acad. Phila. 95 (1862). 



Plant smooth, light colored. Culm 40-60 cm. high. Ligule 



