Panicum. triandria digynia. 297 



little compressed, smooth. Leaves tending to be bifarious, 

 short, smooth, tapering from the base to a sharp point. Spikes 

 compound, secund. Spikelets, from six to twelve, alternate, 

 somewhat remote, secund. Rachis both common and partial 

 three-sided ; the two sides from whence the spikelets issue 

 concave. Flowers two or three from the same point, gene- 

 rally three; all sessile, or very nearly so; sometimes a few 

 small bristles mixed w ith them. Calyx as in the genus, all 

 the glumes three-nerved, a little hairy, and scabrous. Corol, 

 the neuter valve is here present, but no stamens. Seed broad, 

 oval, smooth, a little pointed, three-nerved. 



Obs. Cattle are very fond of it, yet it is not cultivated in 

 these parts. 



26. P. grossarium. Linn. sp. pi. ed. Willd. i. 349. 

 Culms creeping. Leaves soft and downy. Spikes from 



six to ten -flowers solitary, sub-sessile. Corol three- valved. 

 Seed oblong, acute, transversely rugose. 



Loves fresh pasture ground. 



Culms, in a good soil creeping to a great length, in a poor 

 soil nearly erect. Leaves, tapering from the base to a fine 

 point, somewhat downy, and very soft. Spikes compound, 

 secund. Spikelets from four to twelve, alternate, secund, 

 expanding on one side, most simple, in two rows. Calyx 

 pretty smooth. Corol, the neuter valve is always present. 

 Nectary a rugose gland between the germ and exterior valve 

 of the corol. Seed oblong, white, slightly rugose in a trans- 

 verse direction. 



Obs. The form and rugosity of the seed distinguish it from 

 P. colonum, the flowers also are here single, there two or 

 three from the same point. 



27. P. umbrosum. Linn. sp. pi. ed. Willd. i. 343. 

 Culms, at the base creeping. Leaves soft. Spikes, from 



six to ten ; flowers paired on a common pedicel. Corol three- 



