56 TRIANDRIA. MONOGYNIA. 
as long as the corolla. Corolla 2-valved, ob- 
_ Jong-ovate, terete, and awnless. Style very long. 
Nectary cleft. 
Spikes digitate, linear; flowers by pairs alternately sub- . 
sessile. Species of Panicum of Linnzus and others; with 
which they nearly agree in structure, but possess the ha- 
bit of Paspalum. 
SPectes. 1, D. sanguinalis. 2. villosa. 3. filiformis. 4. 
paspalodes. ; 
Except the D. sanguinalis and the D. humifusa of Eu- 
rope, the few other species of this genus, about 12, are” 
* confined to India and North America. 
83. CYNODON,. Richard. (Bermuda-grass.) 
- Calix 2-valved, spreading, lanceolate. Co- 
- rolla larger than the calix, 2-valved; the exte- 
» Fior valve large and ovoid. .Vectary truncate. 
aa Spikes digitate, flowers imbricated in a single series, 
A remarkably creeping grass, growing very luxuriantly 
in the sands of the sea-coast, as well as the poorest loose 
soils, and were not its extirpation so difficult, might-be 
of importance for forming pastures where scarcely any 
’ other vegetable could exist. “ 
__ There is only 1 species, the €. Dactylon, common to 
Europe, North America, and the West India islands. 
84. PASPALUM. L. 
— Calix 2-valved, equal, mostly orbicular. Co- 
“olla 2-valved, of the same figure and magni- 
tude. Stigma plumose. : 
: _ Flowers in digitate spikes arranged on one side; mostly 
_- “ in 2, 3, or even 4 rows; rarely alternating in a single row, 
‘ im some Species Ovate as well as orbicular. ‘Spikes ge- 
erally digitate and definite, in a few species allied to the 
ss Sar. Bloc} sett P. membranaceum ( Ceresia fluitans of 
. 3 Mr. Elhor the P. stoloni the spikes are ve 
|. - Humerous, and disno; gs ong a 
Sposed almost vyerticillately upon a ra- 
_ ceme, in these also the flowers are ovate, and the rachis _ 
— This genus, as Mr. Brown very justly ob- 
‘Whicl produce spikes, = “ums at least tothe species 
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