Genus 99. 



GRASS FAMILY, 



8. Bromus inermis Leyss. Hungarian or 

 Awnless Brome-grass. Fig. 669. 



Bromus inermis Leyss. Fl. Hal. 16. 1761. 



Culms tufted, 2i°-3i° tall. Sheaths smooth and 

 glabrous; blades 6'-io' long, 2"-3" wide, smooth and 

 glabrous; panicle 6'-io' long, oblong, the axis his- 

 pidulous, the hispidulous branches ascending in clus- 

 ters ; spikelets io"-i2i" long, about 2i" wide, oblong, 

 erect, the first scale i-nerved, the second 3-nerved, 

 the flowering scales s"-6" long, 5-7-nerved, awnless 

 or rarely awn-pointed. 



In fields and waste places, South Dakota, Ohio and 

 Colorado. Introduced from Europe. June and July. 



9. Bromus Porteri (Coulter) Nash. Porter's Chess. Fig. 670. 



Bromus Kalmii var. Porteri Coulter, Man. Bot. Rocky 



Mt. Region 425. 1885. 

 Bromus Porteri Nash, Bull: Torr. Club 22: 512. 1895. 



Culms ii°-3° tall, erect, simple, pubescent below 

 the nodes. Sheaths shorter than the internodes, gla- 

 brous or sometimes softly pubescent; ligule 4" long, 

 truncate; blades l"-3" wide, rough, those of the culm 

 4'-o/ long, the basal narrow and about one-half of the 

 length of the culm ; panicle 3' -6' in length, its branches 

 drooping and flexuous, at least when old, the nodes 

 of the axis pubescent; spikelets 5-10-flowered, 9"-is" 

 long, on slender flexuous pedicels ; empty scales pu- 

 bescent, the first narrower than the second, both 

 3-nerved; flowering scales 5"-6" long, obtuse, 5-7- 

 nerved, densely pubescent with long silky hairs; awn 

 l"-2" long. 



In dry soil, South Dakota to Montana, south to western 

 Nebraska, New Mexico and Arizona. July-Aug. 



10. Bromus Kalmii A. Gray. Kalm's Chess. Wild Chess. Fig. 671. 



Bromus Kalmii A. Gray, Man. 600. 1848. 



Culms ii°-3° tall, erect, simple, smooth and glabrous. 

 Sheaths shorter than the internodes, more or less pu- 

 bescent; ligule very short; blades 2V-7' long, i"-4" 

 wide, sparingly pubescent; panicle 2'-6' in length, open, 

 its branches usually flexuous ; spikelets 6-10-flowered, 

 6"-i2" long, on slender flexuous pedicels; empty scales 

 pubescent, the first narrow, acute, 3-nerved, the second 

 longer, broad, obtuse or mucronate, 5-7-nerved; flower- 

 ing scales about 4" long, 7-9-nerved, densely silky 

 pubescent, the awn i"-ii" in length. 



In woods and thickets, Quebec to Manitoba, New Jersey, 

 Pennsylvania and Missouri. July-Aug. 



