ORDER CXLII. — GRAMINACK.i:. 503 



Genus XXXYII.—KL'YMUS. (H7A//.V.) 

 (From elumus, a hull; a name given to grasses that grow about Elijma.) 



SpiJcelets 2 or more, at each joint of the rachis, .1 — 9-flow- 

 ered. Olumes 2, nearly equal, somctinios absent ; lower 

 palea entire, with a short awn, upper one bitid. Scales ovate, 

 hairy. 



1. E. Virgin'icus, (L.) Stem erect, glabrous. Leaven scabrouis, with 

 scabrous sheaths. Glumes 2, somewhat latoral, terminating by nn awn ; 

 the exterior palea concave, awned, about the size of tlie interior. — !(. 

 June — Aug. Dry soils. 2 — 3 feet. 



2. E. stria'tus, (Willd.) Spike erect ; spikek-ts 2-flowered, awnod, 

 hispid, in [lairs. Glumes linear, awned. Stem erect, striate. Leaves 

 lanceolate, acuminate, upper surface scabrous; raciiis pubescent. — IC. 

 June. Shady woods. 8 — 12 inches. 



3. E. hys'trix, (L.) (Asprella hi/strix, Willil.) Spike erect; spike- 

 lets expanding, 4-flowered, destitute of glumes. Palece glabrous. 

 Leaves glaucous. — 2^. Jul}'. Mountains. 2 — 3 feet. 



Gknus XXXVIIT.— HOR'DEUM. L. {Barley) 



Spikelets 1-flowered, 3 at each joint of the rachis. Glumes 

 slender awned, or bristle-form. Palcce herbaceous ; the lower 

 convex, awned. Stamens 3. 



1. 11. vulga're, (L.) Spike long, flexible, a little arched ; florets 

 disposed in 6 rows, or less in poor soils, two opposite rows most pro- 

 jecting. 



The native country of the Barley is uncertain. Its uses are numerons. To make 

 temporary pastures, in this climate, it is of great value. It forms our Porter and Ale 

 by aflPonUng the fermenting substance of malt, which Is sprouted Barley. Pearl Bar- 

 ley is Barley with the outer covering removed. 



Tribe IX.— SACCHA'RE.E. 



Inflorescence spicate ; rachis articulated. 



Genus XXXIX.— TIIIP'SACUM. L. {Gama Grass.) 

 (From tfibo, to rub ; from its polished spike.) 



Flowers monoscious. Sterile florets : stamens 3 ; glumes 2, 

 2-flowered, outer one sterile, the interior neuter ; palea 1, mem- 

 branaceous. Fertile flowers : G^lumes 2, 1 -flowered, surrounded 

 by an involucre; paleaB 2. St>/les 2. Seed 1. 



1. T. dactyloi'des, (L.) Stem erect, glabrous*, more or less compress- 

 ed. Leaves large, contracted at tlie base ; sheath villous at the tlinmt. 

 Flowers in 3 clustered spikes; the upper florets sterile, the lower fer- 

 tile, generally 2 — 1.-2^. July— Aug. On dry soils. 5— 7 feet, 



2. T. moxosta'chyum, (Willd.) Ste7n erect, glabrous. compreMOil 

 Leaves large, serrulate, contracted at the base. Floi»rrs in a M.ht*ry, 

 terminal spike; upper florets sterile, the lower fertile.— 2;. Aug. 

 Oct. Along the sea-coast. 3 — 5 feet. 



