416 POACE.E. 



mm. long, hairy above, bearing 3 awl-shH])ed sete, 2 mm. long, the 

 lateral ones bearing a thin marginal appendage; rachilla terminat- 

 ing in a minute truncate empty awnless glume. 



Xew Mexico, Pringle, Vasey; Mexico, Pringle 1434, Palmer 

 3400, Schaffner 1016. 



Colorado, Arizona to New Mexico. 



2. B. stolonifera Scribu. Proc. Acad. Phila. 302 (1891). B. 

 scoiyioides S. Wats, in Proc. Am. Acad. 18: 17G (1883) not Lag. 



Culms slender, 3-10 cm. high, bearing racemes. Leaf-blades 

 narrow, glabrous, 1-3 cm. long. Spikes solitary, rachis 1.5-2 cm. 

 long. Spikelets not crowded, empty glumes 1-nerved, first lanceo- 

 late, 3 mm. long, with an awn 1 mm. or more long, second 

 broader, about 6 mm. long, short awned, tliinly pubescent on the 

 keel; floral glume 5-6 mm. long, 3-lobed for about one-fourth of 

 its length, central seta 5-7 mm. long, lateral ones a third shorter; 

 palea about 6 mm. long; rachilla nearly smooth, 3 mm. long, 

 bearing some setae 15 mm. long. 



Mexico, Pringle 3174, on the plains, La Houda Station. 



3. B. ramosa Scribu. Vasey, Grasses Southwest l:t. 44 (1890). 

 B. oligostachga var. ramosa Scribu. 



A densely tufted slender light green perennial, 20-40 cm. high. 

 Culms branching below, nodes smooth. Lower sheaths 2 cm. long, 

 ciliate at the throat, those of the culm 5-7, the lower nearly as long 

 as the internodes; ligule a ciliate ring; blades of sterile shoots and 

 culms 3-8 cm. long, about 2 mm. wide, involute, apex filiform, 

 curved. Spikes 1-2 in number, 1.2-1.7 cm. long, linear, very 

 slightly falcate, pubescent, pedicels 2 mm. long. Empty glumes 

 villous, lanceolate, 1-nerved, first 1.7 mm. long, second 3.2 mm. 

 long; floral glume oval-ovate, the back shortly pubescent, 4 mm. 

 long, the 3 setae about 1 mm. long; palea as long as its glume, with 

 3 very short setae; rachilla hairy, 0.7 mm. long, bearing 3 setae 

 3-4 cm. long. 



Southwestern Texas, KeaUey for Nat. Museum. 



It grows in bushy clumps with much-branching perennial culms, 

 with the habit of Miililenhergia Texana, and is confined to calcare- 



