This paper reports the results of an inventory of the vascular plants at the Hugo Wildlife Management Area in southeastern Oklahoma. A total of 573 specific and interspecific taxa of vascular plants in 359 genera and 113 families were collected. The most commonly collected were of the families Poaceae (75), Asteraceae (76), Fabaceae (40), and Cyperaceae (38). One hundred sixty-four species were annuals or biennials, and 409 were perennials. Ninety-seven species of woody plants were present. Fifty-one exotic species were collected representing 9% of the flora. Fourteen species tracked by the Oklahoma Natural Heritage Inventory were found. This study reports 256 species previously not documented in Choctaw County.