AGROSTIDE.E. 303 



blades of the culm flat or involute, 5-15 em. long, 2-3 mm. Avide; 

 blades and sheaths more or less ciliate with tubereled hairs. Pani- 

 cle enclosed at the base or but slightly exserted, broadly pyramidal, 

 10-16 cm. long; rays diverging, slender, rigid, the longest 8-10 

 cm. long, bearing a few spikelets on long pedicels on the outer 

 half. Spikelets linear-lanceolate, empty glumes 1-nerved, first 

 about 1 mm. long, second equalling the floret, 2-2.3 mm. long; 

 floral glume and palea equal, the former 1-nerved. 



Texas (Presidio County), Nealley for U. S. Dept. Agricul. in 

 1890. 



Texas and Indian Territory. 



37. S. capillaris Vasey, Contrib. U. S. Nat. Herb. 1 : 283 

 (1893). 



A rather slender erect tufted perennial with few culms, 30-60 

 cm. high. Sheaths slightly compressed, longer than the internodes, 

 throat ciliate; ligule very short; blades of sterile shoots numerous, 

 3-20 cm. long, the base flat or involute, 2-3 mm. wide, the point 

 long and filiform, those of the culm 3 in number, the upper filiform, 

 1-3 cm. long. Panicle exserted, often ovate or pyramidal, 10-18 

 cm. long; rays mostly single, some in pairs, the longest 4-7 cm. 

 long, tlie branches diverging, very slender. Spikelets dark lead 

 color or brown; empty glumes broadly oval, first about 0.5 mm. 

 long, second 1-nerved, 1 mm. long; floral glume broadly oval, 

 1-nerved, sometimes with an obscure nerve on each side, obtuse 

 when spread, 1.5 mm. long; palea emarginate, as broad and nearly 

 as long as its glume. 



Mexico (Jalisco), Palmer 512; Pringle 1426. 



Found so far only in Mexico. 



38. S. Buckleyi Yasey, Bull. Torr. Club, 10:128 (1883). 

 Culms slender, compressed, solid as in Maize, 40-60 cm. high. 



Sheaths compressed; those of the culms about 4 in number, with 

 sheaths nearly as long as the internodes; ligule a short ciliate fringe; 

 blades smooth, those of sterile shoots two-thirds as long as the culm, 

 flat or conduplicate, 3-4 mm. wide. Panicle but little exserted, 

 open, oblong, lax, 15-25 cm. long, rays single or in twos, capillary, 

 the lower the longer, 8-10 cm. long, flower-bearing for the upper 



