Bradley's Spleenwort -

Bradley's spleenwort - Illinois Department of Natural Resources

: Initially, the hybrid was sterile, but through a rare natural process of chromosome doubling, it became a fertile, independent species. bradley's spleenwort

: It is listed as endangered in states like Illinois , Indiana, and Pennsylvania, and threatened in Ohio . Bradley's spleenwort is highly specialized and is often

Due to its very specific habitat requirements and rare occurrence, it is considered a species of special concern in many states. the hybrid was sterile

Bradley's spleenwort is highly specialized and is often referred to as an "Appalachian spleenwort".

: Research suggests that Bradley’s spleenwort has actually "formed" multiple times in different locations from independent hybridization events between its parent species. Habitat and Distribution

: It is found from New Jersey and Pennsylvania south to Georgia and Alabama, and west into the Ozarks of Missouri, Arkansas, and Oklahoma.