\. 



TRIANDRIA.— DIGYNIA. 63 



very unequal, entire ; culm and leaves smooth : 

 stipule very short, truncate. 

 HAB. Mountain meadows. June. H . Culm 2 ft. high. 

 leafy ; pan. sub-racemose ; spik. terete ; cal. purple. 



81. BROMUS. Brome-grass. 



B. secalinus : panicle spreading, a little branched ; 

 spikelets oblong-ovate, compressed ; florets about 

 10, distinct, rather remote, longer than the flex- 

 uous bristles, leaves somewhat hairy. 



HAB. Cultivated grounds. June. 0. Culm 2 — 3 

 ft. high ; nodes swelled and pub esc. ; leav. dark green : 

 pan. ovate, flat when old. 



B. mollis : panicle erect, contracted ; spikelets ob- 

 long-ovate, somewhat compressed, pubescent ; bris- 

 tle straight, as long as the corolla; leaves very 

 softly pubescent. 



HAB. Fields and pastures. June. $ . Culm 2 ft. 

 high, mostly pubesc. ; leav. pale green ; spik. 5 — 10-fl. 



B. purgans: panicle nodding; spikelets lanceolate. 

 terete ; florets hairy ; bristle straight ; leaver- 

 smooth ; sheaths hairy. 



HAB. Wet meadows and banks of rivers. Aug. U . 

 Culm 4 ft. high, smooth; sheaths rctrorsehj hairy; 

 spik. 6—8-/. 



B. ciliatus: panicle nodding ; spikelets oblong, terete, 

 8 — 10-flowered ; glumes acute, (not mucronate,) 

 ciliate ; corolla hairy ; margin villosely ciliatc : 

 bristle short. 



HAB. Banks of rivers. June. y. . Culm 3 ft. high, 

 pubesc. at the joints ; leav. pale green, hairy both 

 sides ; pan. zvith 2 bracts at base. 



B. pubesccns : panicle at length nodding; spikelet- 

 lanceolate, terete ; florets pubescent ; leaves and 

 lower sheaths pubescent. 



HAB. Woods. June. U. Culm 4 ft. high, hairy 

 below ; leaves smooth beneath. 



82. ARRHENATHERUM. 



A. avenaceum: panicle equal, nodding ; nun as long 

 again as the flower ; culm geniculate, smooth ; root 

 nodose. 



"' u 'une. \\ . Root creeping; culm 



