Roltbollia incurvata
Hard grass Hard" grass` (gr[.a]s`). (Bot.) A name given to several different grasses, especially to the {Roltb["o]llia incurvata}, and to the species of {[AE]gilops}, from one of which it is contended that wheat has been derived. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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