Class III. Order III. 41 



leaves. Panicle made up of compound crowded racemes, the 

 rachis five angled. Upper glumes terminating in awns of vari- 

 ous length. A common weed in cultivated ground. August, 

 September. Annual. 



Subgenus DIGITARIA. Flowers in digitate or fascicled 

 spikes, without bristles. 

 PANICUM SANGUINALE. Purple Panic grass. 



Spikes digitate, about four ; leaves and sheaths 

 somewhat hairy ; flowers oblong, pubescent on the 

 margin. 



Syn. DIGITARIA SANGUINALIS. MX. 



A common weed. Culm ascending at base and rooting from 

 the lower joints. Leaves a little waved and hairy. Spikes 

 linear, radiating from the top of the culm, their rachis com- 

 pressed, serpentine, with spikelets of two, three, or four flowers 

 in its depressions. Cultivated grounds. July, August, Annual. 



Subgenus PANICUM. flowers panicled, perfect florets 

 cartilaginous, unarmed. 



PANICUM CAPILLARE. L. Hairy Panic grass. 



Sheaths very hairy ; panicle capillary, branching, 

 decompound, lax ; flowers minute, all pedicelled, soli- 

 tary, oblong-ovate, acuminate, awnless. 



A large branching grass, the culm, leaves, and especially the 

 sheaths, covered with thick, rigid, horizontal hairs. Panicle 

 often a foot long and nearly as wide, its branches long, straight, 

 stiff, slender, given off at right angles, knotted at base. Pedun- 

 cles capillary, supporting solitary, scattered, naked flowers. 

 Frequent in cornfields, &c.. July, August. Annnal. 



PANICUM LATIFOLIUM. L. Broad-leaved Panic grass. 



Leaves ovate-lanceolate, clasping ; sheaths hairy 

 at the neck ; panicle nearly simple. 



Remarkable for its broad leaves. Culm a foot high, smooth, 

 giving out branches from its joints. Leaves rough at the edge, 

 acuminate, clasping, hairy where they unite with the sheaths. 

 6 



