TRIANDRIA, DIGYNIA. 
4T 
A well known and important grass, not a native, but now 
completely naturalized in this country. Every where among 
grass, particularly in meadows, quite common. Perennial. 
June, July. 
I 
I 45. Alopecurus, Gen pi. 102. (Gramine<9.J 
j Calix 2-valved, 1-fiowered. Corolla 1-valved, 
awned from the base. 
1. A. culm erect, glumes oval, obtuse, the awn subaiistatus® 
scarcely exserted. Mich* 
A foot high, leaves smooth, spike very long. On the mar- 
gins of pools, in Jersey, near this city. Rare. Perennial. 
46. Panicum, Gen. pi. 107. ( Graminece* ) 
Calix 3-valved, exterior valve often very small, 
1 -flowered, (mostly with the rudiments of a 
sessile, neutral or masculine floret.) Corolla 
(hermaphrodite) 2‘Valved, cartilaginous and 
persistent. Nutt. 
1. P. spikes alternate and verticillate by pairs; spike- crus gaiii. 
lets subdivided ; glumes awned hispid ; rachis 
five-angled. Sp, PL 
P. hirtellum, Walt. 
Tar, ct muticum, valves of the calix without awns. 
/3. aristatum, just described. 
Cocksy-foot Panicum. 
A strong rough plant two feet high, with dark brown co- 
loured panicles. In damp places, very common. Perennial. 
Flowers all summer. 
2. P. culm assurgent, geniculate, very glabrous ; g:enicuiatum, 
panicle terminal and axillary, diffuse and expand- 
ing ; sheaths of the leaves inflated. Elliot* 
P, dicotomiflorum, Mich. ? 
P. miliaceum, Walt. 
