52 



TRIANDRIA, DIGYNIA. 



Panicum sanguinale, L. 

 Syntherisma prascox, Walt. 

 Paspalum sanguinale, Lam. Ency. 5. p. 33. 

 Icon. Curt. Lond. 4. t. 7. 



Purple Crab-grass, 



Very common every where in cultivated ground. Annual. 

 All summer. 



filifcrrais, 

 Mil hi. 



sptaceum, 

 Mich. 



2. D. culm erect, leaves somewhat glabrous ; spike- 

 lets erect, 3 -flowered ; flowers tall on footstalks j 

 valves of the calix nearly equal. Elliot. 



D. pilosa, Mich. ? 



Panicum filiforme, Herb. Lin. according to Smith ; 

 scarcely different from Milium panicum, S wartz, 

 (Muhl.) 



Paspalus filiformis, Flugge. 



Svntherisma serotina, Walt. ? 



Panicum debile, Desfontaines. 



Erect Digitaria, 



A more delicate grass than the preceding ; and more scarce. 

 Annual. August, September. 



49. Paspalum, Gen. pi. 107. (Graminea.) 



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

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

 nitude. Stigma plumose. JVutt. 



1. P. culm erect; leaves and sheaths villous j spikes 



generally solitary, flowers in 2 rows. 

 P. pubescens, Muhl. Descrip. Uberior Gram* 

 P. dissectum, Walt. 



Slender Paspalum, 



A very slender and delicate grass, from 10 inches to a foot 

 high. In Jersey, not uncommon. Annual. June, July. 



