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oZ- Andropogon Le Beardgrass. 
Perennials with solid culms, the spikelets in spikelike racemes, 
these single on peduncles from spathelike sheaths. Spikelets arranged 
in pairs at each node of an articulate rachis, one sessile, the other 
pedicellate, the sessile with one perfect terminal floret and a sterile 
one below it, the pedicellate reduced to a glume; glumes equal, coriaceous; 
fertile lemmas hyaline, awmed from between the teeth of a bifid apex, the 
wn geniculate, tightly twisted below; palea minute; sterile lemmas hyaline, 
awnless, empty, shorter than the glumes. 
1. Ae scoparius liichx. Culms tufted, erect, branching from the upper 
nodes; sheaths keeled, scaberulous or nearly smooth; blades flat or con- 
duplicate, scabrous on the margins, the surfaces smooth or scaberulous, 
4-10 cme long, 2-3 mms wide; racemes about & cm. long, more or less flemous, 
the joints and pedicels hairy on the margins; sterile spikelets 2-4 mm. long; 
fertile spikelets 3 mm. long, the avms about 8 mn. long above the bend. 
(Schizachyrium scoparium (liichx.) Nash), 
Gf Sandy river banks. — : SS 
Y Lee Leiberg 1615. 
Sa es 
