Muhlenbergia sylvatica Torr. WOODLAND DROP-SEED.—a, 5, 
spk oe es c, the same with th the outer or ota glumes Senge. Other species 
of Muhlenbergia are illustrated by Figs. 99 to 111, in Bul. 7, and 443 to 449, in 
43, ee Schreb. _ Gen. FL 44, ee Bpikelets 1-flowered, ‘aie 
oe 
very s 
and usua usually hairy pen below ad fe glume, but not extending ise em it. 
Glumes 3, the first t em pty, m ranaceou! BOF hyaline, bs Ra Boe Aceh or 
nerveless, Il cron 
pointed or sdmotimnes a wned; 3d or Sowertny maar narrow, every or more 
or less pilose below, 3- to 5-nerved ,or from between 
the teeth of aa more or whose ones ae bidentate apex. ae straight or 
fiexuose. Palea thin, 2-n ens 
3. Styles howe Grain close iti 1 Perennial 
erence (rasely annual) ‘with small 1 spikelets and greatly varying er culms 
me 
flat or sate involute; panicle narrow and spike-like or open and widely 
ormerly included in Agrostis. 
-_ Species oa 60, chiefly American; most abundant in Mexico 
15444—No. 20-5 
