MANUAL OF THE GRASSES OF THE UNITED STATES 



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of rachilla joint, cleft nearly to the base, the intermediate lobes 

 broad, subcucullate, the awns of rudiment and fertile lemma reaching 

 about the same height, a second rudiment, broad and awnless, often 

 developed o (B. micro- 

 stachya L. H. Dewey.) 

 — Open ground, mesas, and 

 rocky hills, Texas, New 

 Mexico, southern Utah, 

 Arizona, southeastern Cali- 

 fornia, Mexico (fig. 1093). 

 The awns vary in length. 

 The form with shorter awns 

 is that described as B. 

 pumila Buckl.; the longer 

 awned form is that de- 

 scribed &sB.arenosaYnsey. 

 11. Bouteloua parryi 

 (Fourn.) Griffiths. Parry 

 grama. (Fig. 1094.) 

 Annual, resembling B. roth- 

 rockii; culms erect or gen- 

 iculate-spreading, sometimes branching ; blades papillose-pilose; spikes 

 4 to 8, often flexuous, commonly grayish purple, 2 to 3.5 cm long; 

 rachis papillose-pilose; spikelets 40 to 65, about 6 mm long; second 

 glume awned from a bifid tip, the keel papillose-pilose with spreading 

 hairs; fertile lemma densely pilose, deeply cleft, the awns spreading, 



Figure 1087.— Bouteloua chondrosioides. Panicle, X 1; 

 spikelet, X 5. (Type.) 



Figure 1088.— Bouteloua radicosa. Pan- 

 icle, X 1; spikelet, X 5. (Griffiths 7181, 

 Ariz.) 



Figure 1089.— Bouteloua filiformis. Pan- 

 icle, X 1; spikelet, X 5. (Griffiths 7199, 

 Ariz.) 



the oblong intermediate lobes fimbriate; rudiment densely bearded at 

 summit of rachilla, cleft nearly to the base, the lobes obovate, fim- 

 briate, the awns exceeding those of the fertile lemma; a second rudi- 



