A(JH<)ST1I)K.E. 349 



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

 (188;}). 



A robust pi'iviiniiil, 75-100 i-m. hif^li. Slieutlis sniootli, whortor 

 than tlie interuodes; ligule deourrent, 3-5 mm. long; blmius Ihit, 

 {irni, ratbor abruptly i)olntc(l, 10-20 cm. long. G-10 mm. wide. 

 Paniclo spikoliko, more or k>8S interrupted, about 10 cm. long, llie 

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

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

 first 1-Tierved, second 3-nerved; lloral glume slightly shorter, 

 toothed, ami bearing 2 seta3, the awn stout, twisted, attached about 

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

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

 mm. long, the bristle 'i mm. long, with hairs projecting 1 mm. 



Washington (Cascade Mountains), Tii^ci'di/, Vasvij. 



20. C. poseformis (Fourn.). ChiHastruni jmcformc Fourn. 

 Mex. IM. Enum. Cram. 1)0 (1880). 



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

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

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

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

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

 in fours and fives, the sets 5-0 cm. distant, longest ray 8-10 cm. 

 long, fiow( r-bearing on the upper half. S})ikelt'ts green, ovate- 

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

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

 the longer; floral glume uuawned, 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-laiu'eolate, stigmas luirrow. In color, leaves, and ])an- 

 icle it much resembles Cinna pendula. 



Mexico, Pringh 4184, in cool moist soil. 



31. C. blanda. C. pallida Vasey & Scribn., Contrib. V. S. 

 Nat. Herb. 3:79 (1892), not C. Muell. (1808). Walp. Ann. 

 6:986 (1808). 



Au erect ])erennial, 120-150 cm. high. Culms smooth, rather 

 slender, composed of 5-T lengthened interuodes. Sheaths close. 



