— cre Fourn.—a, b, The empty glumes of 2 spikelets; 
of the f first floret: poy the rudimentary secon nd floret; d, oes view 
of “the first floret which <" bares a es long awns. One other species of this 
genus is illustrated by fig. 190 in Bul 
Fourn. Mex. Pi. 2: 142, 1881. Spikelets 1- to $-flowered, 
ay 
77. TRI 
hermaphrodite 
eral spikes; rachilla articulated above the empty glumes and ee — 
vies ~ é 
empty glumes 2 unequal, 1-nerved, bi 1 , the %d short pane 
oo rvyed, 3-awn subequal ‘ or 
the lateral | onesmuch shorter. Palea closely enveloped by es so ohas: hyaline, 
2-keeled. Stamens 3. Styles distinct; stigmas plumose.. Grain narrow SE ne 
subterete, free within the glumes. Rather tall ena (2) grasses with 
leaves and many slender spikes, which | are wguaie or closely approximate at 
T Arizona Mexico. a ri 
