Rotanthella is a genus of flowering plants in the family Campanulaceae. It includes a single species, Rotanthella floridana, commonly known as the Florida bellflower, a perennial endemic to Florida.

The species was first described as Campanula floridana in 1878. In 2020 Nancy Ruth Morin placed the species in the newly described monotypic genus Rotanthella as Rotanthella floridana.

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