80 TREANDRIA. DIGYNTA. 
branaceous margin on one side, and a lateral tooth on the 
other, lateral nerves set with 2 rows of globular resinous 
glands, the central one, a little pubescent, (seen through 
a lens) sending out from above the middle, a straight, 
horizontal awn, tuberculate at its base! rigid, and inclined 
fnwards; inner valve acute, l-nerved, awnless, about one 
fourth the length of the outer valve. Flosculi deciduous, 
various, 4 or 5, valves lanceolate, membranaceous, cari- 
nate, 3 or 4 neutral, only 1 hermaphrodite, flowers all bi-, 
valved; fertile and lowest neutral sessile flower villous on 
the margin about mid-way, the lowest florets also villous 
at the base; the perfect flower sheathed by an auxiliary 
valve similar to that of the corolla; sessile dorsal valves 
all awned below the summit, that of the lowest neutral 
floret the length of the valve; awns straight: terminal neu- 
tral florets pedicellute, smooth, uppermost very small] and 
entirely awnless. Stamens 3. “ Styles 2, shorter than the 
corolla. Stigmas plumose, purple. Nectaries 2, abovate, 
shorter than the germ.” ELtirotr, Seed arillate, trun- 
cate at the apex, oblong, subtriquetrous, smooth, corcu- 
lum merely attached to the separated farinaceous periS- 
perm.—(Seen persistent in winter, and in a dried state with 
Dr. Baldwin, of Savannah.) . 
Although I have not been able, with Mr. Elliott, to ob- 
serve a 3-valved calix in this singular grass, there still 
: appears to be sufficient reason to separate it from any ge- 
hus which can include the Chloris petrea, and C. mucro- 
2 nata. The form and character of the calix, the singular 
abortion of the flosculi, in which one side of the spikelet 
is neutral, the membranaceous consistence of all the 
valves, a large sessile accessory valve or single glumed 
__ rudiment applied to the dorsal valve of the only herma- 
_ phrodite flower, and the awns all arising from beneath 
the summit of the valves, are circumstances combined 
which perhaps no other known genus possesses. 
It exists only, with many other North American plants, 
in the primitive maritime soil, and in depressed situations. 
Its glandulous aroma is so powerful as to create pun- 
_ gency on being masticated. 
112. MANISURIS. Z. | 
Flowergpolygamous, spiked.—Hermaphrodite 
_ Calix 1-flowered, 2-valved, valves unequal, ex- 
= terior coriaceous, roundish, the base emarginate 
_ on eithey side, Corolla 2-valved, smaller, in- 
’ 
