Asplenium × trudellii commonly known as Trudell’s spleenwort is a rare hybrid fern of the eastern United States first described in 1925. It is formed by the crossing of mountain spleenwort (A. montanum) with lobed spleenwort (A. pinnatifidum). Trudell’s spleenwort is intermediate in form between its two parents and is generally found near them growing on exposed outcrops of acidic rock. While A.
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