Downingia bella, also known as Hoover's calicoflower or Hoover's Downingia, is a member of the Bellflower Family (Campanulaceae). The genus is named after A.J. Downing (1815–1852) a noted American horticulturist and landscape architect.

This native annual herb is endemic to California and found in valley grassland communities. Its habitat is wetlands, generally vernal pools between 4600 and 5250 feet (1400 to 1600m). As approximately 20% of vernal pools in California have been lost, D. bella is uncommon. The range of D. bella is scattered from locations in Riverside County to areas in the Great Central Valley.

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