236 BULLETIN 772, TJ. S. DEPARTMENT OF AGRICULTURE. 



Type species: Panicum divaricatum L. 

 Panicum, section Lasiacis Griseb, Fl. Brit. W. Ind. 551. 

 included, the first of which is P. divaricalum. 



Lasiacis Hitchc., Contr. U. S. Nat. Herb. 15 : 16. 



1864. Five species 



1910. The type is desig- 

 nated. This genus was previously 

 included as a section in Panicum, 

 from which it differs in habit, the 

 woody culms resembling those of 

 bamboos, and in the oblique spike- 

 lets with the woolly apex of the 

 fruit and the gibbous fertile palea. 



The only species in the 

 United States is Lasiacis dr- 

 varicata (L.) Hitchc. (fig. 

 143) of southern Florida. It 

 has no economic value. 



120. SACCIOLEPIS Nash. 



Spikelets oblong-conic ; 

 first glume small, much 

 shorter than the spikelet ; sec- 

 ond glume broad, inflated- 



FIG. 143. Lasiaois divaricata. Fascicle of branches, 

 X 1; spikelet and -fertile floret, X 10. 



saccate, strongly many-nerved; sterile lemma narrower, flat, fewer 

 nerved, its palea nearly as long, often subtending a staminate flower ; 

 fertile lemma stipitate, elliptic, chartaceous-indurate, the margins in- 

 rolled, the palea not inclosed at the summit. 



