448 GRAMINACE^E. 



Moist woods. N. Y. and Mass, to Car. W. to Mich. June. It.- Culm about 

 3 feet high, erect, rather slender, simple. Leaves linear-lanceolate, somewhat 

 rough. Panicle very loose, few-flowered. Nodding Fescue-grass. 



47. DIPLACHNE. Beauv. Diplachne. 



vFrom the Greek JurAooj, double, and %*'>?, chaff; in allusion to the division 

 of the outer palea.) 



Spikelets at first terete, 7 9-flowered. Palese unequal, mu- 

 cronate, villous on the margins ; lower one slightly bifid at the 

 tip, with a straight bristle between the teeth, 3-nerved ; upper 

 bifid, flat on the back. Stigmas simply plumose. Pericarp 

 loose. Panicle somewhat secund. 



D. fascicularis Beauv. Torr. N. Y. Fl. Festuca fascicutaris Lam. F. 

 procumbens Muhl. 



Brackish meadows. N.Y. to Car. Aug. (J). Culm 8 15 inches long, 

 branched from the base, procumbent. Leaves longer than the culm, narrow, 

 pointed at the end ; ligule lacerate. Panicle erect, with spreading spike-like 

 branches. Spikelets one-sided, on short peduncles. 



Cluster-flowered Diplachne. 



4S. BROMUS. Linn. Brome Grass. 

 (From Ppopos , a name given by the Greeks to a kind of oats.) 

 Spikelets oblong, 3- many-flowered ; the flowers in two 

 raws. Glumes unequal, shorter than the flowers. Lower 

 palea bifid at the apex, and usually awned a little belov^ the tip ; 

 upper 2-keeled, the keels pectinate-ciliate. Stigmi simply 

 plumose. Panicle diffuse or contracted. 



1. B.sterilis Linn. : panicle drooping, slightly branched ; spik/.ets linear- 

 lanceolate, at length oblong ; flowers remote, lanceolate-subtei^te ; paleae 

 shorter than the straight awn. 



Waste grounds. Penn-Yan, Yates county, N. Y. Dr. SartwelL June, July. 

 (1). Culm about 2 feet high, slender, smooth. Leaves pubescent above, smooth 

 beneath. Panicle nearly simple, slender. Spikelets about 6-flowered. Intro- 

 duced from Europe. Barren Brome-grass. 



2. B. secalinus Linn. : panicle spreading, the peduncles but Jittle branched ; 

 spikelets ovate-oblong, compressed, 8 10-flowered ; flowers rather remote ; 

 paleae longer than the flexuous awns. 



Cultivated grounds. Can. to Car. W. to Ohio. June, (p. Culm 2 3 feet 

 high ; the nodes swollen and pubescent. Leaves broad-linar, hairy above. 

 Panicle 4 6 inches long ; branches semiverticillate, scabrouR and pubescent. 

 Introduced from Europe. It is very common in wheat fields, especially when 

 the giain has been injured by frost. This has given rise to the corr/non, but 

 mistaken, idea that wheat is changed into this plant. Chess. Cheat. 



3. B. mollis Linn. : panicle erect, contracted ; spikelets oblong-ovate, 

 Bomewhat compressed, pubescent ; flowers imbricate, compressed, at* iut as 

 long as the straight awn. 



Fields and pastures. Mass, to Penn. June. . Cuim 12 fee bVI 



