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 bradley's spleenwort
: Major threats include habitat destruction from quarrying and mining, mechanical disturbance from rock climbing, and overshading caused by invasive vines or tree growth. Bradley's spleenwort is highly specialized and is often
: 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. mechanical disturbance from rock climbing
Bradley's spleenwort - Illinois Department of Natural Resources
: Its fronds are relatively small, typically ranging from 4 to 20 cm (about 1.5 to 8 inches) in length.