Hoft 



GRASS FAMILY. 



11. Bromus squarrosus L. Corn 



Brome. (Fig. 516.) 



Bromus squarrosus "L,. Sp. PI. 76. 1753. 



Culms S'-iS' tall, erect, simple, smooth and 

 jjlabrous. Sheaths shorter than the internodes, 

 softly pubescent; ligule *4" long; leaves i'-5' 

 long, i // -2 // wide, softly pubescent; panicle 2'-6' 

 in length, open, the branches ascending or 

 drooping, often flexuous; spikelets nodding, 6- 

 12-flowered, on slender pedicels; empty scales 

 obtuse or acutish, the first 5-nerved, the second 

 longer, 7-o,-nerved; flowering scales 4j // -5>4 // 

 long, obtuse, shining, minutely scabrous; awn 

 inserted below the apex, about as long as the 

 scale, bent at the base and divergent. 



In ballast and waste places about the eastern sea- 

 ports. Fugitive or adventive from Europe. July- 

 Aug. 



12. Bromus brizaeformis Fisch. & Mey. Quakegrass Brorac. 



Bromus brizaeformis Fisch. 8t Mey. Ind 

 Petrop. 3: 30. 1836. 



Culms 8 / -2 tall, erect, simple, often slender. 

 smooth and glabrous. Sheaths shorter than the 

 internodes, the lower pubescent with soft villou* 

 hairs; ligule i" long, erose-truncate; leaves 

 long, i "-3" wide, pubescent; panicle i#'-8' in 

 length, open, the branches ascending or often 

 drooping, flexuous; spikelets few, ,S'-i' long. 

 laterally much compressed; empty scales very ob- 

 tuse, often purplish, glabrous or minutely pubes- 

 cent, the first 3-5-nerved, the second larger, 5-9. 

 nerved; flowering scales 3"-4" long, very broad. 

 obtuse, 9-nerved, shining, glabrous or sometime* 

 minutely pubescent, unawned. 



Sparingly introduced into Pennsylvania; al*o from 



Montana to California. N'ativi- !.( ?v.rthern Kuropettd 

 Asia. July-Aug. 



13. Bromus breviaristatus (Hook.) Buckl. Short-awned Chess. (Fig.5i8.) 



Ceratochloa breviaristata Hook. Fl. Bor. Am. 2: 253. 

 1840. 



Bromus breviaristatus Buckl. Proc. Acad. Phila. 1862: 98. 

 1862. 



Culms i-4 tall, erect, simple, smooth or rough, 

 sometimes pubescent below the panicle. Sheaths pu- 

 bescent, at least the lower ones, which are often over- 

 lapping; ligule \" long, truncate; leaves 6 / -i long or 

 more, 2 // -6 // wide, rough and often pubescent; pan- 

 icle 4 / -i5 / in length, its branches erect or ascending, 

 the lower 2 / -6 / long; spikelets 5-io-flowered; empty 

 scales acute, pubescent, the first 3-5-nerved, the sec- 

 ond longer, s-g-nerved; flowering scales compressed, 

 keeled, 6"--j" long, acute, 7-9-nerved, appressed- 

 pubescent; awn -2."-$" long. 



In dry soil, Manitoba to British Columbia, south to 

 Nebraska, Arizona and California. July-Aug. 



15 



