John McNeill

William G. Dore

The grass family (Gramineae or Poaceae) is one of the largest families of flowering plants and one that is well represented in Ontario. This guide provides an account of the genera, species, and infraspecific taxa of native or introduced plants. Identification keys are provided to the genera, to the species within each genus, and to the main infraspecific taxa. Generic descriptions are provided, reflecting the characteristics common to the species occurring in Ontario and not necessarily applying to the genera as a whole. Formal descriptions of the species are not included, but outstanding diagnostic characteristics, particularly those noticeable in the field, are given. Photographs of individual florets or grains are provided for almost all the species.

William G. Dore

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