232 



POACEAE 



17. Bromus grandis (Shear) Hitchc. 

 Tall Brome-grass. Fig. 546. 



Bromus oicuttiaitus grandis Shear, U. S. Dept. Agr. Div. 

 Agrost. Bull. 23: 43. 1900. 



Bromus porteri assimilis Davy, Univ. Calif. Publ. But. 1: 

 55. 1902. 



Bromus grandis Hitchc. in Jepson, Fl. Calif. 1: 175. 1912. 



Culms 1-1.5 m. tall; sheaths pubescent; blades 

 pubescent, elongated, spreading, rather lax ; panicle 

 broad, open, the branches slender and drooping, 

 naked below, the lower usually in pairs, as much as 

 15 cm. long; first glume usually distinctly 3-nerved ; 

 lemmas 12-15 mm. long, densely pubescent over the 

 back ; awn 5-7 mm. long. 



Dry hills at moderate altitudes, in the Transition Zone; 

 Monterey and Madera Counties, California, south to San 

 Diego. June-July. Type locality : San Diego. 



18. Bromus hordeaceus L. 



Soft Cheat. 



Fig. 



547. 



Bromus hordeaceus L. Sp. PI. 77. 1753. 



Culms 20-80 cm. tall ; sheaths retrorsely softly 

 pilose-pubescent ; blades usually pubescent ; panicle 

 contracted, erect, 5-10 cm. long, or, in depauperate 

 plants, reduced to a few spikelets ; glumes broad, ob- 

 tuse, coarsely pilose or scabrous-pubescent, the first 

 3-5-nerved, 4-6 mm. long, the second 5-7-nerved, 7-8 

 mm. long; lemmas broad, obtuse, 7-nerved, coarsely 

 pilose or scabrous-pubescent, rather deeply bidentate, 

 8-9 mm. long, the margin and apex hyaline ; awn 

 rather stout, 6-9 mm. long, palea about three-fourths as 

 long as lemma. 



A weed in waste places and cultivated soil, abundant on the 

 Pacific Coast, occasional in the eastern States, introduced from 

 Europe. June-July. Type locality, European. 



Bromus scoparius L. Cent. PI. 1: 6. 1755. This has been collected in California at Mariposa 

 and Santa Barbara (Somes). It differs from B. hordeaceus in having fie.xuous, somewhat d 

 spreading awns. Introduced from Europe. 



(Congdon) 

 varicate or 



19. Bromus racemosus L. 



Smooth-flowered Soft Cheat. Fig. 548. 



Bromus racemosus L. Sp. PI. ed. 2. 114. 1762. 



Bromus hordeaceus Icptostaclivs Beck, Fl. Niederosterr. 1C9. 



1890. 

 Bromus hordeaceus glahrescens Shear, U. S. Dept. Agr. Div. 



Agrost. Bull. 23: 20. 1900. 



Resembles B. hordeaceus, but the panicle often 

 more open ; lemmas glabrous or scabrous, not pu- 

 bescent. 



A weed in waste places, introduced from Europe. June- 

 July. Type locality, European. 



