448 GRAMINACEiE. 



Moist woods. N. Y. and Mass. to Car. W. to Mich. June. 01. — Culm about 

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

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



47. DIPLACHNE. i?mwr.— Diplachne. 



vFrom the Greek JirrXoof, double, and ax'"') c/wif ; in allusion to the division 

 of the outer palea.) 



Spikelets at first terete, 7 — 9-flowered. Paleae 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. Festiica fascicularis Lam. F. 

 procumbens MuJd. 



Brackish meadows. N. Y. to Car. Aug. (T). — 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. 



48. BROMUS. Linn.— Brome Grass. 

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

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

 rows. 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'.. Stigm»i simply 

 plumose. — Panicle diff'use or contracted. 



1. B. sterihs Linn. : panicle drooping, slightly branched ; spiL:-><ets linear- 

 lanceolate, at length oblong ; flowers remote, lanceolate-subulate ; paleae 

 shorter than the straight awn. 



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

 . (J). — Cidm 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 little branched ; 

 .spikelets ovate-oblong, compressed, 8 — lO-flowered ; flowers rather remote ; 



palese longer than the flexuous awns. 



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

 high ; the ncxles swollen and pubescent. Leaves broad-linsur, hairy above. 

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

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

 the giain has been injured by frost. This has given rise to the common, but 

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



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

 somewhat compressed, pubescent ; flowers imbricate, compressed, ab "mt as 

 long as the straight awn. 



Fields and pastures. Mass. to Penn. June. @. — Cuim 1 — 2 fee byb- 



