56 TRIANDRIA. MONOGYNIA. 



as lorij^ as the corolla. Corolla 2-valvetl, ob- 

 loii^-ovate, terete, and awnless. Style very long. 

 A'^ectary cleft. 



Spikes dig-itate, linear; flowers by pairs -alternately sub- 

 sessile. Species o'" Panicwn of Linnaeus and others; with 

 which they nearly agree in structure, but possess the hst,- 

 hit oi' JPaspalu?n. 



Species. 1. D. sangulnalis. 2- rillosa. o.Jilifortnis. 4- 

 paspalodes. 



Except the D. sangninalis and the D. hnmifusa 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 tlian the calix, 2-valved; the exte- 

 rior valve large and ovoid. *Kectary truncate. 



Spikes dig-itate, flowers imbricated in a single series, 

 solitary. 



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 C. Dactylon, common to 

 Europe, North America, and the West India islands. 



84. PASPALUM. i. 



Calix 2-valved, equal, mostly orbicular. Co- 

 rolla 2-valved, of the same figure and magni- 

 tude. Stigma plumose. 



Flowers in digitate spikes arranged on one side; mostly 

 in 2, '6, or even 4 rows; rarely altei'nating in a single roW, 

 in some species ovate as well as orbicular. Spikes ge- 

 nerally digitaie and definite, in a few species allied to the 

 genus Ceresia, \'iz. P. membranaceumf^Ceresia Jluitans oi- 

 Mr. t,lliott ) and the P. stoloniferum^ the spikes are very 

 numerous, and disposed almost verticillately upon a ra- 

 ceiTie, in these also the flowers are ovate, and the rachis 

 membranaceous. This genus, as Mr. Brown very justly ob- 

 serves, is closely allied to Panicum, at least to Ihe species 

 which produce spikes. 



