5B0MUS TRIANDRiA. DIGYNIA. 199 



Sp^ pi.) 13. Will d. Spec. I. p. 433 Pursh Fl. L p. 85. 

 Elliott Sk. I. p. 173. Muhl. Gram. p. 169. B. ca- 

 nadensis Mich. FL I. p. Go? Roem. ^ Schult. 11, 

 p. 638. 



Root perennial. Culm 3 feet high, pnhesrent at the joints, the 

 rest smooth. Leaves lanceolate, pale green, (not glaucous,) 

 hairy on both sides, nervose and carinate ; the upper ones 

 scarcely pubescent *, margins scabrous and ciliate. Stifiule ob- 

 tuse, not hairy, short. Sheaths pubescent backwards, hairy at 

 the throat. Panicle nodding, with 2 bracts at the base ; branches 

 aggregated 2 — 4 together, pubescent and scabrous. Sfiikeiets 

 obiong, terete, acuminate, 5— 13-flowered. Glumes 3-nerved, 

 ciliate, unarmed. Valves of the corolla lanceolate, hairy on 

 every part, ciliate on the margin ; bristle short and straight. 

 Muhl. 



Hab. On the banks of rivers in Pennsylvania. June. Mu hi en- 

 berg. 



5. B. pubeiceris M u h I. : panicle at length nodding ; 

 ipikelets lanceolate, terete ; florets pubescent ; leaves and 

 \6we.v sheaths pubescent. Willd. Ermm.h. Berol. I. p. 120» 

 Muhl. Gram. p. 169. Roem. ^ Schult. II. p. 642. 



Root perennial. Culm erect, 4 feet high, hairy below; joints 

 black. Leaves lanceolate, smooth beneath, pubescent above. 

 Stifiule very short. Lower sheaths pubescent backwards; 

 upper ones smooth. Branches of the panicle 2 — 5, scabrous. 

 Calyx 8— !2-flowered, acute, sometimes with a short bristle 

 at the tip, smooth or pubescent, 3-nerved. Corolla pubescent 

 on every part; inferior valve 5-nerved. S^^-rf obiong. Muhl. 

 Hab. , In woods. Pennsylvania. June. Mu hlenb er g. 



The two last species of Bbomus appear to be in much con- 

 fusloti. The B ciliatus lA Muh le nb er g differs from that 

 of Linn te us in having the corolla hairy on every part. L i n^ 

 n <e u s remarks that the back of the corolla is not hairy, and 

 that this mark is very rharacteristic. But specimens of B. 

 ciliatus sent to Sir J.' E. Smith by Mu h I e n b e r g, were 

 pronounced identical with those in the Linnaan Herbarium. 

 There are two species ol Bromus growing in this vicinity, and 

 not uncommon throughout tlie northern States, one of which 

 appears to be exactly h. ciliatus of Li una us; the other 

 may be the B. canadensis o{ Michaux. A short descrip- 

 tion of each is added. 



1. B. ciliatus L ? Culm about 4 feet high. Leaves a^ 

 foot long or more, 4 — 5 lines broad, liairy on the upper sur- 

 face, smooth beneath. Particle nodding and expanding; 

 branches in pairs. Sfii/celets oblong-lanreolate, compressed, 

 8 — 10-flowered; florets distinct, at length expandiitg. Glumes 

 linear-lanceolate, mucronate, striooth ; the superior a thud 

 longer than the inferior one, 3-ntrved. Inferior valve of the 

 corolla linear-lanceolate, ciliate on the margin, smooth ort 

 17 



