A Handbook of Nebraska Grasses. 15 
FIG, PAGE 
3. Racemes single.............. {ndropogon scoparius 18 79 
IE SUMNER tre DC oi. wl wila tle ew Kt we bd we ses 4 
4. Fourth glume with long twisted awn......... 
SEEER Nts s aleve bab ota By 9 Andropogon furcatus 18 79 
4. Fourth glume with short straight awn........ 
a ee ee fee ee Andropogon hallii 18 7) 
Figure 18. 

Andropogon scoparius. Andropogon furcatus. Andropogon hallii. <x 
PANICEAE. 
1. Spikelets not surrounded by bristles nor spines...2 1 16 
1. Spikelets surrounded by prominent bristles or 
RT ete res ROE Cale a nish aWpltbin’e «OO 17 

