'Roltbollia incurvata' definitions:

Definition of 'Roltbollia incurvata'

From: GCIDE
  • 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 Aegilops, from one of which it is contended that wheat has been derived. [1913 Webster]