Fig. 51. Sporobolus longifolius (Torr ya Wood. LON cine aoe SPOROBO- 
Lisa, ‘A spikelet; b, the same with the outer or e 7 no Pt ren 
from the flowering glume ne pe ria; £; n ineclosed by ree oose gircanp: & 
grain. her species of Sporobolus are illus' trated by figs. 119 to 129,in Bul. 7. 
and 454 to 470, in Bul.17. 
SPOROBOLUS R. Br. Prod. Fl. Noy. Holl. 169. 1810. Spikelets 1-flowered, 
atin ate, in narrow and spike-like or loose a spreading panicles; rachilla 
articulated above the empty glumes, aot produced ——* asi flower. Glumes 
awnless, ot 1 , or nerveless; 
<a 2 ago ag empty, usually un: unequal; 3d or floral giome. equalling rexceed- 
ty ones. Palea as long as or waa than the flowering glume. 
Stamens ‘“ oie ia noes distinct. Grain free, t he peep name: nape 
neni Annual or perennial grasses with sma 
the seed, 
spikelets; very in : 
Species ai bout 80, a few! in es Old World, but most abundant in America, | 
