236 BULLETIN 772, U. S. DEPARTMENT OF AGRICULTURE. 
Type species: Panicum divaricatwm L. 
Panicum, section Lasiacis Griseb, Fl. Brit. W. Ind. 551. 
included, the first of which is P. divaricatwm. 
Lasiacis Hitchc, Contr. U. Nat. Herb. 
1864. Five species 
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 Lasiacis di- 
varicata (L.) Hitchc. (fig. 
143) of southern Florida. It 
has no economic value. 
Sacciolepis Nash. 
Spikelets oblong-conic : 
first glume small, much 
shorter than the spikelet : sec- 
ond fflume broad, inflated- 
Fig. 143. — Lasiacis divaricata. Fascicle of branches, 
X | ; spikelet and fertile floret, X 10. 
saccate, strongly many-nerved; sterile lemma narrower, flat, fewer 
nerved, its palea nearly as long, often subtending a stamina te flower ; 
fertile lemma stipitate, elliptic, chartaceous-indurate, the margins in- 
rolled, the palea not inclosed at the summit. 
