236 BULLETIN 772, U. S. DEPARTMENT OF AGRICULTURE. 
Type species: Panicum divaricatum L. 
Panicum, section Lasiacis Griseb, Fl. Brit. W. Ind. 551. 1864. Five species 
included, the first of which is P. divaricatum. 
Lasiacis Hitche., Contr. U. S. Nat. Herb. 15:16. 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 Lastacis di- 
varicata (l.) Hitche. (fig. 
143) of southern Florida. It 
has no economic value. 
120. SacctoLtepIs Nash. 
Spikelets oblong-conic: 
first glume small, much 
shorter than the spikelet ; sec- 
ond glume broad, inflated- 
Fic, 143.—Lasiacis divaricata. Fascicle of branches, 
xX 4; 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. 
