Vascular Flora of a Red Sandstone Hills Site Canadian County, Oklahoma

This article reports the results of an inventory of the vascular plants from a site in central Oklahoma. Three hundred thirty-four species of vascular plants in 237 genera and 76 families were collected. The most species were collected from the families Poaceae (56) and Asteraceae (54). The genera with the most species were Euphorbia and Eragrostis, both with six species. One hundred six species were annuals, 227 perennials, and 1 biennial. Forty-nine species of woody plants were present. Forty-one species, or 12.3% of the flora, were exotic to Oklahoma. No species listed as threatened or endangered by the U.S. Fish and Wildlife Service were encountered, but two species (Escobaria vivipara and Muhlenbergia bushii) are tracked by the Oklahoma Natural Heritage Inventory.