310 TRIANDRIA DYGINIA. 



52. KGELERIA. 



1C. truncata : leaves flat, smooth; panicle oblong, racemose; calyx 2- 

 flowered, with a third abortive floret, unequal; interior glume a 

 little scabrous, obtuse ; corolla glabrous. 



HAB. Dry woods. June. 1\ ; culm Qfeet high, slender ; calyx very 

 unequal ; inferior glume obliquely truncate. 



53. FESTUCA. Fescue-grass. 



F. tenella : panicle spiked, very simple, secund ; spikelets mostly 9 

 flowered ; bristles shorter than the subulate florets ; culm filiform 

 angular above ; leaves setaceous. 



HAB. Sandy soils and on hills. June, <v) ; culms numerous, 8 14 

 inches high, straight ; sheaths pubescent ; calyx decid. 



F. elatior : panicle spreading, much branched, loose ; spikelets ovate 

 lanceolate, 4 5 flowered; florets slightly armed; leaves flat; root 

 creeping. 



HAB. Wet meadows. June, 7J. ; culm 3 4 feet high, terete, 

 smooth ; stip. very short ; panicle large, nodding when old. 



F. pratensis: panicle spreading, branched; spikelets linear, many- 

 flowered, acute ; leaves linear ; root fibrous. 



HAB. Meadows and fields. June July, 1J.; culm 1 2 feet high, 

 erect, smooth ; panicle subsecund, nearly simple ; spic. 7 S-Jlowered ; 

 Jloioer not mucronate. 



F. nutans : panicle diffuse, at length nodding ; branches long gemin- 

 ate, naked below ; spikelets ovate, 3 5-flowered ; florets somewhat 

 obtuse, unarmed, nerveless. 



HAB. Woods and shaded rocky places. June, 7|. ; culm 3 feet high, 

 dark green ; stip. very short ; panicles few-Jlowers, scabrous ; cor- 

 olla coriaceous. 



54. DACTYLIS. Orchard-grass. 



D. glomerata : panicle secund, glomerate ; leaves carinate. 



HAB. Fields, meadows, &c. May June, 3J. ; culm 2 3 feet high; 

 panicle contracted, glume strongly ciliate. 



55 DANTHONIA. 



D. spicata : panicle simple, appressed ; spikelets 7 9, about 7-flower- 

 ed ; inferior valve of the corolla hairy ; leaves subulate ; lower 

 sheaths hairy at the throat. 



HAB. Dry woods and sandy fields. June July, 'Zj. ; culm cespilose, 

 18 inches 2 feet high ; leaves hairy above ; pan. spiked. 



56. TRISETUM. 



T. palustre : panicle contracted, nodding, somewhat verticillate ; calyx 

 2 3-flowered ; florets smooth, acuminate ; the inferior one awnless ; 

 inferior valve of the superior floret bicuspidate, awned below the 

 tip. 



HAB. Wet meadows. June July, Tj.; Culm 1 2 feet high, erect; 

 leaves flat, smooth : panicle few-Jlowered, pale green. 



57. BROMUS. Brome-grass. 

 B. secalinus ; panicle spreading, a little branched; spikelets oblong- 



