84 TRIAN'DKIA DIGYNIA 



Bab. Margins uf streams : Brandy wine : Schuylkill: frequent. Fl. Au*. Fr. Sept. 

 Obs. This species often has much resemblance to tho preceding ; except that the 

 flonts and rachis nre remarkably hirsute. Tho var. glaucifolius, Torr. is eencr- 

 ally a taller plant, with Longer and more patulous spikes, tho awns long and some- 

 what rlexuose. and the wholo plant glaucous. It occurs along the Schuylkill, near 

 Black Reck. 



3. E. VILL08US, JtfuhL Spike somewhat nodding, patulous ; rachis 

 and florets hispid-pilose ; spikelets I to 3-flowered; glumes linear, pi- 

 losr-ciliatc, 2 or 3-nerved. Beck, Bot. p. 415. Spbcim, Gray, 



Gram. 1. no. 62. 



Ahoy E. ciliatus. Afuhl. CatuL p % 14. Ejusrf. Gram. p. 17 9. 



Villous Elymus. 



Hoot perennial. Culm 2 m '.) feet nigh, rather slender, striate, smooth. Leaves 

 lanceolate, scabrous, especially on the mure ins, pubescent on the upper surface •' 

 sheaths nerved, hairy, upp< r ones often smooth; ligulc very short, or obsolete 

 Spike 2 to 3 inches long, at first erect, at length spreading and somewhat nodding; 

 rachis villous. Spikelets 2 or 3-flowered,— aometimes l-flowered, with a pedicel- 

 late rudiment of a second. Glumes nearly linear, 2 or 3-nerved, pilose-ciliaio. 

 Lower pale a very hairy, terminating in a long. Straight, scabrous and somewhai 

 ciliate awn j upper palca Lance-oblong, obtuse, concave on the back, scabrous 

 on the two keels. Seed oblong, light brown, pubescent at summit, adhering to the 

 paleae. 



Flab. Banks of streams ; Brandy wine : frequent* Fl. July. Fr. Sept. 



4. E. Hystihx, 7y. Spike erect ; spikelets distant, diverging, about 

 3-flowered ; glumes mostly wanting ; florets smooth. Bed; Bot, p. 

 415. Sprcim. Gray, Gram. 2. ?io. 130. 



Pobcupisb Eltmis. 



Root perennial. Culm 2 to 4 feet high, smooth. Leaves lanceolate, keeled, 

 nerved, scabrous on the margin and upper Surface, often glaucous : sheaths strK 

 ate, smooth ; ligule short, retuse. Spike 1 to 6 inches long; rachis compressed, 

 smoothish, serrulate on the margins. Spikelets distant, at length diverging al- 

 most horizontally, often 3 at each joint of the rachis. Glumes generally wanting, 

 or consisting of a callous rudiment: hut not un frequently the upper and lower 

 spikelets have one or two linear-subulate glumes, as long a* the florets. Florets 

 smoothish, with a short rigid pubescence at base, articulated to clavate obliquely 

 truncate ped ice Is. Lower mho obscurely 5-nervud, terminating in a very lung 

 scabrous awn; upper pal ea lance-linear, obtuse, ciliate-serrulate on tho two 

 fceels. 5r*<nincar-oblong, upper side concave, with a dark purple line in the 

 centre, bearded at summit, adhering to the paleae. 



Hob. Rich, moist, rocky woodlands : frequent. Fl. July. Fr. Aug. 



Obs. The expanded bristly spike of this remarkable species somewhat resem- 

 bles an Apothecary's bottle-washer. One or two additional species have been 

 found in the United States. 



55. HORDEUM. L. Mutt. Gen. 119, 

 £An ancient Latin name, of obscuro derivation.] 



Spikelets 3 at each joint of the rachis, the lateral onas often abortive, 

 each 1-flowered, with a subulate rudiment of a second floret Glumes 

 2, nearly equal, collateral, lance-linear, flat, awned. Lower Palea lance- 

 •vate, concave, terminating in a long awn; upper one laaceolate, acu*- 

 jmnate, obtuse, Seed adhering to the pale#» 





