CHLORIDEAE 



107 



Tribe VII. CHLORIDEAE 



Splkelets unisexual, the different kinds of 



flowers on the same or different plants. 

 At least some of th* spikelets perfect. 



Spikelets with 1 (rarely 2) perfect flowers. 

 Rachis jointed just below the spikelet, the 



whole spikelet falling at maturity. 

 Rachis not jointed, the empty glumes per- 

 sistent. 

 No glumes above the perfect flower. 



Spikelets numerous, crowded; spikes 

 2-6 digitate. 

 Spikelets fewer, not so crowded, the 

 spikes slender scattered along a 

 central rachis. 

 Glumes above the perfect flowers 1 to 

 several. 

 Spikes digitate or crowded together 

 near the end of the stem. 

 Flowering glumes with a single awn 



or awnless. 

 Flowering glumes with 3 awns. 

 SpiKes more or less scattered along a 

 central rachis. 

 Spikes rather few In number, 1 to 6; 



spikelets numerous, 25 or more. 

 Spikes numerous, 12 or more; spike- 

 lets few, usually less than 12. 



Spikelets with 2 or 3 perfect flowers; spike- 

 lets alternate. 



50. BULBILIS. 



42. Beckmannia. 



43. 



iG. 



Capriola, 



SCHEDOXXARDt'S. 



42 BECKMANNIA Host. Slough Grass. 

 I. Beckmannia erucaeformis (L.) Host. Reported but once 



from New Mexico. It oecurs in very wet soil or beside running 

 water at high levels: may be expected in mountains near the Colo- 

 rado line. 



43. CAPRIOLA, Adans. 



I. Capriola dactylon (L.) Kuntze. Bermuda Grass. 

 Cultivated in the valleys of the lower parts of the State: in the 

 Lower Sonoran Zone. 



