GENERA OF GRASSES OF THE UNITED STATES. 
151 
Montana and Texas. Sporobolus wrightii Munro, saccaton, is much 
taller, with a large but narrow panicle. This is found from Arizona 
to western Texas. 
Most of the per- 
ennial species of 
Sporobolus are pal- 
atable forage; 
grasses, but few of 
them are abundant 
enough to be of im- 
portance. On the 
Arizona Plateau, S. 
interruptus Vasey 
is an i m p o r t a n t 
range grass. It is 
called black sporo- 
bolus, because of 
the dark, narrow, 
loosely flowered 
panicle. 
70, Blepharonetjron 
Nash. 
Spikelets 1-flow- 
ered, the rachilia 
disarticulating 
above the glumes; 
glumes subequal, 
rather broad; 
lemma 3-nerved, 
the nerves densely 
pilose; palea 
densely pilose be- 
tween the two 
nerves. 
A perennial grass 
with an open, nar- 
row panicle. Spe- 
cies one ; southwest- 
ern United States 
and northern Mex- 
ico. 
Type species: Vilfa 
tricholepis Torr. 
Blepharo neuron 
Nash, Bull. Torrey 
Club 25: 88. 1898. 
Only one species men- 
tioned, B tricholepis 
(Torr.) Nash. 
Fig. 85. — Sand dropseed, Sporobolus cryptandrus. Plant, 
X I ; spikelet and floret, the palea splitting, X 5. 
