GRAMINEAE. 



VOL. I. 



5. Bromus ciliatus L. Fringed Brome- 

 grass. Wood Chess or Cheat. Fig. 666. 



Bromus ciliatus L. Sp. PI. 76. 1753. 



Culms 2-4 tall, erect, simple, glabrous or 

 pubescent. Sheaths often shorter than the in- 

 ternodes, smooth or rough, often softly pubes- 

 cent, or the lower sometimes sparingly hirsute ; 

 ligule very short ; blades 4'-i2' long, 2" -6" wide, 

 smooth beneath, scabrous and often pubescent 

 above ; panicle open, 4'-io' in length, its branches 

 lax, widely spreading or often drooping; spike- 

 lets 5-io-flowered, i' long or less; empty scales 

 very acute, glabrous, rough on the keel, the first 

 i-nerved, the second longer, 3-nerved; flower- 

 ing scales 4" -6" long, obtuse or acute, 5-7- 

 nerved, appressed-pubescent on the margins ; 

 awn 2" -4" long. 



In woods and thickets, Newfoundland to Mani- 

 toba, New York, New Jersey, Minnesota and Texas. 

 Variable. HairyBrome-grass, Swamp-chess. July- 

 Aug. 



6. Bromus purgans L. 



Wild Chess. 



Hairy Wood Chess. 

 Fig. 667. 



Bromus purgans L. Sp. PI. 76. 1753. 



B. purgans latiglumis Shear, Bull. U. S. Dep. Agr. 



Agrost. 23: 40. 1900. 

 B. incanus Hitchc. Rhodora 8: 212. 1906. 



Culms 2-5 tall, erect, glabrous or pubescent 

 at the nodes. Leaf-sheaths longer or shorter 

 than the internodes, more or less pubescent, often 

 furnished with a conspicuous pilose ring at the 

 summit; blades 6'-i2' long, 2" -8" broad, glabrous 

 or pubescent on the upper surface, smooth or 

 rough beneath; panicle 6'-i long, loose, often 

 nodding; spikelets 7-i2-flowered, io"-i2" long, 

 the empty scales narrow, acuminate, sparsely pu- 

 bescent, the lower i-nerved, the upper 3-nerved, 

 the flowering scales lanceolate, acute, usually 

 5-nerved, 5" -6" long, appressed-pubescent all over 

 on the back, the straight awn 2" -3" long. 



Woods and banks, Vermont to Montana, south to 

 Florida and Texas. June-Aug. 



7. Bromus erectus Huds. Upright Brome-grass. 

 Fig. 668. 



Bromus erectus Huds. Fl. Angl. 39. 1762. 



Culms 2-3 tall, erect, simple, slender, smooth and 

 glabrous. Sheaths shorter than the internodes, smooth 

 and glabrous, or slightly pubescent ; ligule *" long, erose- 

 truncate; blades sparingly pubescent, i"-2" wide, those 

 of the culm 4'-8' long, the basal about i long, very 

 narrow ; panicle 3'-7' in length, the branches erect or 

 ascending, the lower i'-3' long; spikelets i'-ii' long, 

 sometimes purplish, 5-io-flowered ; empty scales acumi- 

 nate, the first i-nerved, the second longer, 3-nerved; 

 flowering scales 5"-6" long, acuminate, very rough- 

 pubescent, 5-nerved, the intermediate nerves faint ; awn 

 2" -3" long. 



In waste places. Maine to Ontario and New York. Adven- 

 tive from Europe. July-Aug. 



