TRIANDRIA, MONOGYNIA. 1) & 
“aristis brevibus, subdivaricatis.” Desfontaines remarks 
in his ‘ Flora Atlantica’ of the same plant as growing in 
Northern Africa * glume—mucronaix, mucrone brevissi- 
mo, horizontaliter conniventes;”—2. *racemosum,t (Agros- 
tis racemosa, Micu.) Of this genus there are now 5 spe- 
cies described. The P. monspeliense (or crinitum) on the 
sea-cuasts of Frarice and England, and probably in the 
United States; 2 the P. maritimum discovered by Bon- 
land, near Rochelle in France, 3 the P. vazinatum 
ound by Pallas in the Crimea, and lastly, the P. ieee 
latum near Estremadura in Spain. ‘ 
78. ALOPECURUS. L. (Fox-tail. Grass.) 
Calix 2-valved, 1-flawered. Corolla 1-valved, 
awned from the base. 
- Culm generally simple, terminating in a dense and usu- 
ally cylindric, simple or lobed spike. In the .4. pratensis 
and the A. agrestis, the glumes of the calix are comiate 
~~ Culm very tall, compressed, branched, and somewhat de- 
cin Det panicles interruptedly spiked, both axillary and ter- 
Fai y-flowered; flowers Se ri ine PD 
mating lobes; calix glumes” y eq 
nerved, each nerve Terminating ma very long | seta 
(after the manner of Festuca); corolla glumes nearly equal, ale 
most terete, much shorter than the calix. (the exterior valve _ 
terminating in a straight awn, nearly its length) pilose below; _ 
seed cylindric. = 
Hasitart. On the alluvions of the Missisippi and Missou- : 
ri; abundant around St. Louis, (Louisiana.) oes 
Oss. Arista of the calix more than its length; lea es smooth 
and linear, culm much branched, often 8 feet high, and. dec 
bent upon the neighbouring plants. Pubescence of the eis 2 
hairy, principally near the base, but not as long as the corolla; 
the awn of the flower appears to be often wanting. This — 
cies seems to be somewhat Tees a the “5 farciculatunt = ‘ 
ain, but differs very essentially in the near 
er calix valves, at puaoatk from the genus ou as rather pig = 
structure of the- awns, and the entire but membranaceous mar- 
gins of the calix; (in P. Monspeliense the calix is cleft at 
point; ) the pubescence also near the base of the corolla, but not 
absolutely so, and much shorter than it in length, separates it 
from tis; neither is this pubescence dispos 
2 lateral tufts as in 2grostis, at the same time it i is in thi 
an anomalous circumstance: 23 
