t 
TRIANDRIA, DIGYNIA. eg. 
calix bluish-purple, exterior valve lanceolate, mucronate? 
with a-single nerve; the nerve beset with a few scattered 
bairs arising from so many tubercles; inner valves shorter; 
very narrow. Corolla, outer valve lanceolate, carinate, 3- 
awned, piiose along the margins of the nerves, and at the 
base; inner valve smooth, shortly bi-cuspidate. Neutral 
flower l-valved, obtuse, with 3 awns, and pubescent at 
the base. 
This species, though certainly a congener of the pre- _ 
ceding, is very cons:derably allied to Chloris, appearing 
to unite that genus and Ses/eriu, agreeing partly with the 
latter in the structure of the flowers, and with the former 
in its habitus. (A North American genius ) 
111. MONOCERA. Elliott. 
Flowers polygamous, disposed by 2 rows, in 
an unilateral pectinate spike.—Calix 2-valved, 
rigid, fixed, many-flowered; valves unequal, the 
inner yery small, the outer obtusely carinate, 
and cuspidate, sending out an horizontal awn 
above the middle, tuberculate at its base. Flow- 
ers within the common calix, 3 to 4, neuter, 
and 1 hermaphrodite; the upper neutral rudi- 
ments pedicellate, awnless, the lowest neutral” 
flower sessile, with along awn: hermaphrodite 
2-valved, with a 3d. accessory valve, dorsal 
valves awned; awns all arising below the sum- 
- Mit, unequal, and erect. 
Culm pubescent, erect, and solid, terminated by a sin 
gle recurved, appressed spike; calix smooth, nerves glan- 
dul ferous; corolla membranaceous, sessile flowers villous 
at the base and midway along the margin, awned from 
_ below the summit. The whole plant aromatic when 
bruised; aroma gramineous, (resembling Anthoxcanthum 
Odorutum, Holeus odoratus, Ec.) : oe 
Species. 1, MW. aromatica. ( Chloris monestachya, Micu. 
1. p. 59.) : i 
Culm terete, 3 to 4 feet high. Leaves long, glabrous 
below, seabrous ahove; stipules hairy. Spike terminal, 
solitary, one-s:ded, spikelets opposite, in‘2 rows. Rachis 
semi-cylindric, margined; receptaculum grooved. Calix 
rigid, fixed, 2-vaived, attached toa callous tubercle at its 
base; outer valve oblong-lanceolate, muc 2, a litthe ob- 
~ lique, obtusely carinate, S-nerved, with a je1 
