AGROSTIDE.E. 349 



(1892). Beyeuria Tweedyi Scribu. Bull. Torr. Club, 10 : 04 

 (1883). 



A robust perennial, 75-100 cm. high. Sheaths smooth, shorter 

 than tlie internodes; ligule decurrent, 3-5 mm. long; blades flat, 

 firm, rather abruptly pointed, 10-20 cm. long, 6-10 mm. wide. 

 Panicle spikelike, more or less interrupted, about 10 cm. long, tlie 

 longest rays 3 cm. long, flower-bearing on the upper half. Spike- 

 lets 6-7 mm. long, empty glumes subequal, elliptical-lanceolate, 

 first 1-nerved, second 3-nerved; floral glume slightly shorter, 

 toothed, and bearing 2 setae, the awn stout, twisted, attached about 

 1.5 mm. above the base, extending 4-6 mm. above the glumes; 

 palea a little shorter ^han its glume, hairs of callus few, less than 1 

 mm. long, the bristle 2 mm. long, with hairs projecting 1 mm. 



Washington (Cascade Mountains), Tweedy^ Vasey. 



20. C. poaeformis (Fourn.). Cinnastrum poceforme Fourn. 

 Mex. PL Enum. Gram. 90 (1886). 



A light green perennial, 90-120 cm. high. Sheaths scabrid, 

 about the length of the internodes; ligule many-nerved, lacerate, 

 8-10 mm. long; blades of the culm 4 in number, flat, nearly 

 smooth, taper-pointed, 20-30 cm. long, 7-10 mm. wide. Panicle 

 green, thin, flexuose and nodding, 20-30 cm. long; rays slender, 

 in fours and fives, the sets 5-6 cm. distant, longest ray 8-10 cm. 

 long, flower-bearing on the upper half. Spikelets green, ovate- 

 lanceolate, 2.5 mm. long; empty glumes scabrous, 3-nerved, first 

 ovate, sub-acute when spread, second elliptical-lanceolate, a little 

 the longer; floral glume unawned, destitute of hairs at the base, 

 ovate, as long as the first glume, the rudiment 1 mm. long, another 

 bristle near it; palea nearly as long as its glume. Stamens 2. 

 Ovary ovate-lanceolate, stigmas narrow. In color, leaves, and pan- 

 icle it much resembles Cinna pendula. 



Mexico, PringJe 4184, in cool moist soil. 



21. C. blanda. C. pcdlida Vasey & Scribn., Contrib. U. S. 

 Nat. Herb. 3:79 (1892), not C. Muell. (1868). Walp. Ann. 

 6:986 (1868). 



An erect perennial, 120-150 cm. high. Culms smooth, rather 

 slender, composed of 5-7 lengthened internodes. Sheatlis close. 



