tRiandri:\. digtma. 73 



irmarkably nc^kerl, rather compressed, asperate above, 

 vith 3 or 4 bi-oad flat leaves near the ba e, from 3 to 4 

 feet high, terminatin<r in an almost simple, few-flowered, 

 raceme. Leaves about a foot and a half long", near three 

 qiiarte'-s of an inch v/ide, with the sheath a little pubes- 

 cent. Spikelefs compressed, flowers divaricate Calix 

 extremely imequal, valves j^cii'e, 2 lo 5-flowered. Exte- 

 rior valve of" the corolla somewhat coriaceousj and much 

 lont^er than the calix; inner valve much shorter than the 

 outer. Seed pa'ily coated, with an indurated, cartilagi- 

 nous arillus. — Corisulerabi\ ahied to U/iiola gracilis. 8. 

 p-ran/'ifora 9. fuitans 10. Poteoldes. \l. Unioloides. 12. 

 miUms V^. piirviflovay F.lt.io rr. 



The genus Featvca is almost peculiar to Europe and 

 Noi-lii America; a few species exist in Barbary, (Africa) 

 and in Nortiicrn Asia. 



102. BROMUS. L, (Brome-.^rass.) 



Calix 2 valvcd, many fluwired. Spikelets ob- 

 lowij;. (listiclial. Outer valves of tlie corolla of- 

 ten biiUI at the p<»int, and awned below the 

 suMiinit; interior glume pectinately ciliate. 



The habit of this g-enus is entir'ly similar to the pre- 

 ceding-; the spikelc ts are, hov^'tver, .yenerally more or less 

 terete and tumid; the valvt-s of the con^lla often furnished. 

 Vvith a scariose margin, and in the innei valve, the flexu; es 

 of the nerves are ciliatt ; in many species the panicle is 

 ntitant, and in son.e the seed so large as to have been 

 culiivated for the use of horses and other cattle. 



Species i. B.secalinus. 2 m(////.s\ (i>ot.h intr-iduced) 3. 

 purvans. In this species, the leaves, which are alternate, 

 approach so near to each other as to appear almost disti- 

 dial. 4. ciliatus. 5. aUissimus, I'ursu. Near P'ort iVlan- 

 dan, on the Vlissouri. ver\ large; sea; cely disdnct from the 

 M. canadensis of MichaiX? 



This genus is chiefliy confined to Europe, and Rarbary 

 in Africa, there are also, 2 spt-cies in South America. 



103. DACTYLIS. L. (Orcharfl-Krass.) 



Calix 2-Viilve(l, many-flow:'re(l, compressed, 

 one ol* the valves lari^er, and carinate, some- 

 what awned. Corolla 2 valvcd.— *Si/;i/£e^e/s ag- 

 gregate and capaate. 



Species. \. D glomerata. (Introduced.) 

 H 



