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AGNES CHASE 
been found to produce cleistogenes, it seems probable that this is not a 
rare habit in grasses. Any grass with swollen sheath bases and dis- 
jointing culms may repay examination, after the maturity of its 
terminal panicles. Most of the species so far found are plants of the 
arid regions or of dry places in the humid regions ; all are plants of open 
ground. 
Bureau of Plant Industry, 
Washington, D. C. 
