Class III. Order II. 19 



viride, by drawing the spike downward through the hand. A 

 rough sensation is felt from the bristles being bearded backward, 

 which is not perceived in the other species which are bearded 

 forward. Cultivated grounds. July, August. Annual. 



PANICUM CRUS GALLI. L. Cocksfoot panic grass. 



Spike doubly compound, its stalk mostly five 

 angled ; spikelets alternate or in pairs, subdivided ; 

 calyx bearded, rough. Sm. 



Readily distinguished from the two last by its large com- 

 pound spikes, and large leaves. Culm striated, smooth. Leaves 

 broad and long, rough on the margin. Sheaths smooth swell- 

 ing. Stipules none. Receptacle or spike stalk rough, angu- 

 lar. Calyx ribbed, a little -hairy, with short, variable awns. 

 Rubbish and cultivated grounds. July, August. Annual. 



PANICUM SANGUINALE. L. Purple panic grass. 



Spikes finger like, their receptacles winged, 

 flexuous, knotted at base ; flowers in pairs, awn- 

 less. 



Syn. DiGlVARIA SANGUINALIS. Mich. 



Known at sight by its radiating, umbelled, or finger like 

 spikes. Culms ascending, rooting from their lower joints. 

 Leaves acute, waved at the edge, a little hairy. Sheaths striat- 

 ed, hairy, sometimes smooth, upper ones longer than their leaves. 

 Spikes diverging from the top of the culm at one or more points ; 

 their receptacle compressed, serpentine, with spikelets of two 

 and sometimes of three or four flowers in its depressions. Cul- 

 tivated grounds. July, August. Annual. 



PANICUM OAPILLARE. L. Hairy panic grass. 



Sheaths very hairy ; panicle capillary, branch- 



ing, decompound, lax ; flowers minute, all pedicel- 



