Due to its very specific habitat requirements and rare occurrence, it is considered a species of special concern in many states.
: The frond consists of 6 to 14 pairs of triangular, toothed leaflets. The lowest pair are often the largest, and they gradually decrease in size toward the tip. bradley's spleenwort
: It prefers very acidic, thin soil (pH 3.5–5.0) in exposed, often sunny rock fissures. Because it thrives in such hostile conditions where other plants cannot grow, it faces little competition from more aggressive species. Conservation Status Due to its very specific habitat requirements and
: Major threats include habitat destruction from quarrying and mining, mechanical disturbance from rock climbing, and overshading caused by invasive vines or tree growth. : It prefers very acidic, thin soil (pH 3
: 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