1 cup grass | Definition of cup grass

cup grass

noun

Definition of cup grass

: any of several grasses constituting a genus (Erichloa) of annual and perennial grasses chiefly of warm or tropical regions especially : a common weedy annual grass (E. contracta) of the eastern and central U.S. that has villous spikelets and the second glume acuminate

History and Etymology for cup grass

so called from the shape of the callus

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