9 



little shorter than its palet, which is slightly notched at the tip, 

 with acute or rounded lobes and remarkably broad margins. 



Allied to S. hctci^olepis. Gray. Arizona, No.^66, Coues & Palmer, 

 1866. San Francisco Forest, Arizona, No, 15, Rusby, 1883.* Has 

 been named in some collections Sporoholns ArizonicnSy Thurbcr. 



3. D^YEUXIA SUKSDORFII, Scrib. (C, figs. I -9). Culms 60- 

 90 cm. high, growing in scattered bunches. Radical leaves 15- 

 30 cm. long, 3-5 mm. broad, tapering into very long and slender 

 points, many nerved, strongly scabrous upwardly on the under 

 side, and strigose pubescent above ; leaves of the culms usually 

 three, sheaths shorter than their internodcs. Ligule 3-5 mm. 

 long, minutely scabrous. There is more or less pubescence at 

 the juncture of the leaf with the sheath. Panicle pale straw color, 

 8-10 cm, long, strict and more or less interrupted, as illustrated 

 in C ; the longer branches sometimes 4 cm. long, all very densely 

 flowered. Spikelets 3-4 cm. long ; empty glumes lanceolate acute, 

 sub- equal, about one-third longer than the floret, the second usually 

 three- nerved at base, where the nerves are often more or less green; 

 flowering glume and palea very delicate in texture, with the pro- 

 portions and outlines as illustrated. Awn from near the base, 

 geniculate, twisted below, about as long as the empty glumes. 



Washington Terr., No. 26, Suksdorf, 1882. Oregon, Cusick, 

 1884. Montana, No. 364, Scribner, 1883, etc. 



4. BrOMUS PUMrELLIANUS, Scrib. (D, fi 



1-7). Culms from a creeping root-stalk, stout, 

 50-100 cm. high, according to location; usu- 



g- 



ally standing singly. Sheaths strongly striate, 

 smooth or clothed with a scattering pubescence, 

 closed to near the summit. Ligule short. 



Leaves 4-8 mm. broad, flat, except at the in- 

 volute and pungent-pointed tips, smooth on the 

 back, scabrous above, and sometimes pilose, 

 auricled at the base. (Auricles not always so 

 prominent as in specimen from which the 

 figure was drawn.) Panicle 8-20 cm. loner • . 



^ ' ^ ' anus, showing upper 



branches erect or ascending^ 2-5 at each joint, portion of sheath, lig- 

 one to three flowered, the longer ones 5- 10 cm. ule and leaf auricles. 



Bromus Fumpelli- 



15 provisional number =^885 



numlx^r. — 11. II. R. 



