CLASSIFICATION. 



109 



the panicle through the hand, when the clinging of the 

 reflexed teeth betrays the species. 



4. Panicum glaucum, Linn. Glaucous Panicum. 



(Setaria, Brit. Fl.) 



Eoot annual, fibrous ; stems erect, taller than in the last 

 species, furrowed ; leaves linear-lanceolate, somewhat glau- 

 cous; sheaths shorter than the leaves; panicle spike-like, 

 cj r lindrical ; spikelets crowded, rather larger than in the 

 Hough Panicum ; the bristles numerous, rough, with erect 

 teeth ; the first empty glume very small, the second about 

 twice the size, the third larger again ; the flowering glume 

 investing the seed as it ripens and becoming scored with 

 transverse wrinkles. In this species most authors consider 

 the glumes to contain a barren as well as a fertile floret. 



The Glaucous Panicum is 

 Europe, America, the East 

 Indies, and New Holland, 

 in all which countries it is a 

 common weed in cultivated 

 ground. In England it is 

 not indigenous, but is occa- 

 sionally found in the south, 

 introduced accidentally a- 

 mong other seeds. It is a 

 taller grass than the Rough 

 Panicum, and the glaucous 

 hue of the herbage is agree- 

 able, the numerous bristles 

 are beset with ascending 

 teeth, and have a tawny or 

 golden tinge, not inclinin 



a native of the south of 



to purple. Some seedsmen 



