Synonyms: Colysis dilatata; Colysis insignis; Drynaria decurrens; Kaulinia dilatata; Kaulinia hancockii; Kaulinia insignis (homotypic); Microsorium dilatatum; Microsorium insigne; Microsorum decurrens; Microsorum dilatatum; Microsorum dilatatum f. simplex; Microsorum hancockii; Microsorum hancockii f. simplex; Microsorum insigne (homotypic); Microsorum insignis; Pleopeltis decurrens; Pleopeltis dilatata (homotypic); Pleopeltis insignis (homotypic); Pleopeltis insignis f. aperta; Pleopeltis rivularis; Polypodium acuminatum; Polypodium anceps; Polypodium diffundens; Polypodium dilatatum; Polypodium insigne (homotypic); Polypodium rivulare; Polypodium tridactylon; Selliguea anceps