46 



Fig. 40. PANICUM LEUCOCOMXTM Scribn. U. S. Dept. Agr. Div. Agros. 

 Bui. 7 : 58, ed. 2, 1898. (P. phseothrix in ed. 1, not Trin.; Si/nthcrisma leucocoma 

 Nash, Bui. Torr. Bot. Club, 25 : 295. 1898. ) SILVERY CRAB-GRASS.-A slen- 

 der perennial about 9 dm. (3°) high, with long, narrow leaves and very slender, 

 rather loosely flowered racemes 10-20 cm. (4'-8') long, approximate near the 

 apex of the culm. Spikelets {a,b,c) 2.3-2.5 mm. (l"-li") long, acute, the first 

 glume wanting, the second a little shorter than the third, both densely clothed 

 on the margins and internerves with glandular-tipped, white hairs. The flow- 

 ering glume is shown by d and e.— High pine lands, Florida. (Nash, 115.5.) 

 July. 



