GRASS FAMILY 



231 



14. Bromus orcuttianus Vasey. 



Orcutt's Bronie-grass. 



Fig. 543. 



Bromus orcuttianus Vasey, Bot. Gaz. 10: 223. 1883. 

 Bromus brachyfhyllus Merr. Rhodora 4: 146. 1902. 



Culms erect, leafy below, nearly naked above, 

 80-120 cm. tall, pubescent at and below the nodes; 

 sheaths pilose or more or less velvety ; blades 

 glabrous, rather short and erect ; panicle narrow- 

 pyramidal, erect, 10-15 cm. long, the branches few, 

 divaricate and rather rigid in fruit ; spikelets about 

 2 cm. long, subterete, on short stout pedicels ; 

 glumes narrow, smooth or scabrous, the first acute, 

 6-8 mm. long, 1-nerved, or sometimes with a faint 

 lateral pair, the second broader, obtuse, 8-10 mm. 

 long. 3-nerved : lemmas 10-12 mm. long, narrow, 

 scabrous, or scabrous-pubescent over the back, the 

 awn 5-7 mm. long. 



Open woods, in the Canadian Zone; Washington to Cali- 

 fornia. Jiily-Aug. Type locality: San Diego, California. 



Bromus orcuttianus hallii Hitchc. in Jepson, Fl. Calif. 1: 

 175. 1912. Blades soft-pubescent on both surfaces; glumes 

 and lemmas ijubescent. Dry, mostly wooded ridges and 

 slopes, 5000-9000 feet, California. Type locality: San Jacinto 

 Mountains. 



15. Bromus porteri (Coulter) Nash. 

 Porter's Brome-grass. Fig. 544. 



Bromus kalmii porteri Coulter, Man. Rocky Mount. 425. 



1885. 



Bromus porteri Nash, Bull. Torrey Club 22: 512. 1895. 



Bromus kalmii occidentalis Vasey; Beal, Grasses N. Am. 2: 



624. 1896. 



Bromus ciliatus montanus Vasey; Beal, Grasses N. Am. 2: 



619. 1896. 



Culms slender, erect, pubescent at the nodes, 30- 

 60 cm. tall ; sheaths sparsely pilose or glabrous ; 

 ligule short, about 1 mm. long; blades scabrous, 

 3-5 mm. wide ; panicle nodding, rather few-flowered, 

 about 10 cm. long; spikelets 2-2.5 cm. long; lemmas 

 about 12 mm. long, evenly pubescent over the back, 

 the awn 2-4 mm. long. 



Open woods, in the Transition and Canadian Zones; Idaho 

 to Arizona, east to Colorado; Ontario, California (Johnston). 

 June-Aug. Type locality: Colorado. 



16. Bromus pacificus Shear. 

 Pacific Brome-grass 



Fig. 545. 



Bromus pacificus Shear, U. S. Dept. Agr. Div. Agrost. 



Bull. 23: 38. /. 21. 1900. 

 Bromus magnificus Elmer, Bot. Gaz. 36: 53. 1903. 



Culms stout, erect, pubescent at the nodes, 1-1.5 

 meters tall: sheaths sparsely retrorse-pilose; ligule 

 prominent, 3-4 mm. long; blades sparsely pilose 

 above, 8-10 mm. wide; panicle large, drooping, 

 very open, 10-20 cm. long, the branches slender, 

 drooping; spikelets 2-2.5 cm. long, coarsely pu- 

 bescent throughout; lemmas 11-12 mm. long, the 

 pubescence somewhat dense on the margin, the 

 awn 4-6 mm. long. 



Moist thickets near the shore, southern Alaska to west- 

 ern Oregon. August. Type locality: Seaside, Oregon. 



