103. DACTYLIS. L. (Orchard- -grass.) — 
one of the valves larger, and carinates rent 
~ what awned. Corolla 2- valved.—S; 
gregate and capitate. 
TRIANDRIA, DIGYNTA. TS: 
echoirhahiy naked, rather compressed, asperate above, 
with 3or4 broad. flat leaves near the ba-e, from 3 to 4 
feet high, terminating in an almost simple, few-flowered 
raceme. Leaves about a foot and a half long, near three 
quarters of an inch wide, with the sheath a little pubes- 
cent. Spikelets compressed, flowers divaricate. Calix 
extremely unequal, valves acute, 2 to 5-flowered. Exte- 
rior valve of the corolla somewhat coriaceous, and much 
longer than the calix; inner valve much shorter than the 
outer. Seed partly coated, with an indurated, cartilagi- 
nous-arillus.—Considerabty allied to Uniela gracilis, 8. ~ 
grandifiora 9. fluitans. 10. Potoides. 11. Unioloides. 12. 
nutans. 13. parvifora, FLULIo TT. 
The genus Festuca is almost peculiar to Europe and 
North America; a few species exist in Barbary, (Africa) 
and in Northern Asia. 
302. BROMUS. L. (Brome-grass.) 
Calix 2-valved, many flowered. Spikelets ob- 
long, distichal. Outer vaives of the corolla of- 
ten bifid at the point, and awned below the 
Sumunit; interior glume pectinately ciliate. 
The habit of this genus is entirely similar to the pre- 
ceding: the spikelets are, however, generally more or less — 
terete and tumid; the valves of the corolla often furnished 
with a scariose mar gin, and in the imer valve, the flexures_ 
of the hefves are ciliate; in many species the panicle is 
nutant, and in same the seed so large as to haye been — 
cultivated for the use of horsesand other cattle. | “5 
Species. 1. B. secalinits. 2. mollis, (both introduced) 3. 
purgans. In this species, the leaves; which are alternate, _ 
‘approach so near to each oiher as to appear almost sd a 
cial. 4. ciliatus. 5. altissimus, Pursu. Near Fort Man- | 
dan, on the Missouri, very large; scarcely distinct from the 
B. canadensis of Micuavx? 
This genus is chiefly confined to Europe, and Barbary % 
in Africa, there are also, 2 species in South America. 
Calix 2-valved, many-flowered, compress $$ 
SPECIES. J D. spades (Introduced: 
Hw 
