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Aspleniaceae
Thelypteris
Thelypteris arcana
Thelypteris arcana
(Maxon & C.V.Morton) C.V.Morton, 1967
4% complete
No common name
Contr. U.S. Natl. Herb. 38: 42 (1967)
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Synonyms
Meniscium arcanum
(Maxon & C.V.Morton) Pic.Serm.
Dryopteris arcana
Maxon & C.V.Morton