19 



pilose-pubescent to nearly smooth, about 5-15 cm. long and 3-5 mm. broad. 

 Pnnidf contracted, narrow-pyramidal, 5-10 cm. long by 2-4 cm. broad; branches 

 somewhat spreading in flower. Spikelets 5-13-flowered, ovate-lanceolate, becom- 

 ing obtuse, 12-15 mm. long by 4-6 mm. wide, with short pedicels; empty glumes 

 l)road, obtuse, coam'lij pilose or scabrous-pubescent, the lower 3-5-nerved, 4-6 mm. 

 long, the upper 5-7-nerved, 7-8 mm. long; flowering glume broad, obtuse, 

 7-nerved, coarsely pilose or scabrous-pubescent, rather deeply bidentate, margin 

 and apex hyaline, 8-9 mm. long; awn rather stout, rough, flattened toward the 

 base, straight at first, frequently somevliat 

 twisted when old, about 6-9 mm. long; 

 palea a little more than | the length of its 

 glume. 



A species native in southern Europe, intro- 

 duced into this country, where it is very 

 abundant on the Pacific coast, having taken 

 possession of vast areas of the deteriorated 

 semiarid range lands. It is also found 

 sparingly on the Atlantic coast from Maine 

 to Virginia. 



Specimens examined. — Maine: N. Berwick 

 (J. C. Parlin 567). New York: Aurora 

 (F. V. Coville in 1885). Penns(//ram«.- Phil- 

 adelphia (I. C. Martindale 13 and 14). 

 Delaware: Centerville (A. Commons 1.33). 

 Ohio: Oberlin (A. E. Ricksecker 1895). 

 Montana: Garrison (P. A. Rydberg 2126). 

 rtah: Ogden (T. A. Williams 2495). 

 Idaho: Clear Water River (Sandberg, 

 Heller, McDougal 167). Washingtou: 

 Walla Walla (C. L. Shear 1585; E. P. 

 Sheldon 8140); Tacoma (A. B. Leckenby 

 in 1898); Cascade Mts. (G. R. Vasey iii 

 1889; Sandberg & Leiberg 172); Seattle 

 (C. V. Piper 796). Oregon: Lexington 

 (J. B. Leiberg 10). (''difor)tia : fian Fvru- 

 cisco (M. E. Jones 3270); Marin Co. (Dr. 

 E. Palmer 2032, 2033); Berkeley (J. W. 

 Blankinship 64); Santa Cruz (Dr. Ander- 

 son in 1887); INIorley Station (J. B. Davy 

 1894) ; San Jose (H. A. Brainard in 1896); 

 Pitt River (H. E. Brown 224); Mt. Shasta 

 (H. E. Brown 374b). 



There being nothing in the original descrip- 

 tions of these species to separate them, we 

 have adopted the older name on the author- 

 ity of INIunro, who states in his jiaper on 



Fig. 3. — Bromus liordeaceus : a, empty 

 glumes; b, flowering glume; r, pulea. 



•'The (irasses of Linnseus's Herba- 



specimens of the two, B. hordeaceus and B. mollis, are 



3a 



rium'" that Linnseus' 

 the same. 



BROMUS HORDEACEUS INTERMEDIUS (Guss.) n. comb. Bromus 

 intermidius Guss. Fl. Sic. Prod. 1 : 114. 1827. Serrafalcus intermedius Pari. Rar. 



PI. Sic. 2 : i; 



1840. 



This differs from the species only in its slightly larger panicle and spikelets ^nd awns, 

 wiiich are twisted and divaricate when mature and dry. 



1 Proceedings of the Linnrean Society— Botany, 6: 46. 1861. 



