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Fig. 502. Bouteloua bromoides Lag. Gen. Sp. Nov. 5. 1816. 

 (Dinebra bromoides H. B. K.) Spruce-top. — A rather stout, erect 

 perennial 3 to 6 dm. high, with flat leaves and 5 to 7 more or less 

 spreading spikes, racemose along the upper portion of the culm. 

 Spikelets 5 to 11 in each spike; flowering glume 5 to 6 mm. long, 

 with 3 short awns; imperfect floret (c) raised on a short stipe, 

 and with 3 long awns and a palea. — New Mexico and Arizona. 

 [Mexico.] August, September. 



