42 TRIANDRIA. DIGYNIA. 
vations of Mr. Elliott. The dorsal glume of the corolla. 
is terminated by a long and straight awn; the style appears 
to be single at the base, but bifid above. This grass has 
much less the habit of Agrostis than the following genus, 
and certainly no affinity to Leersia. ’ 
Species. 1. M. diffusa. A very common grass in the 
western, as well as most of the eastern states; round Lex- 
ingion in Kentucky it grows in such abundance as almost ~ 
to exclude every other grass, and affords a tolerable pas 
= turage. 2. erecta. Not quite so common as the preced- 
3 
_ $5. TRICHODIUM. Michaux. — 
__ Calix 2-valved, valves nearly equal, acute; 
* €arina a little hispid. Corolla shorter than the 
calix, 1-valved, awnless. Stigmata almost ses- 
sile, rather hirsute; sae 
Flowers in capillary trichotomous panicles, mostly in 
loose terminal fascicles.—Very nearly allied to the genus 
Agrostis with which it almost agrees inhabit and charac- 
— ter, differing, however, essentially in the glume of the 
' .. €orolla consisting of but a single valve. The carina of the 
calix described as spinulose by Persoon: and: Richard, is 
 ... €ntirely a microscopic character, and even then can 
3 _ Searcely be called"more than a very short hispid ciliation, 
_ Which in T. More distinctly invests the rachis, 
ing very sensibly asperate. 
Species. 1. T\laxiflerum. 2. decumbens. 3. elatum. This 
ters as given 
it, 
