Senega smallii, commonly known as tiny polygala and tiny milkwort, is a rare species of flowering plant in the milkwort family . It is endemic to Florida in the United States, where it is limited to the south-eastern coast of the peninsula. The plant is now only known from eight sites, with most individuals located on one site in Miami-Dade County. The species is threatened by the loss of its habitat. This is a federally listed endangered species of the United States.

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