Dictionary.com
Thesaurus.com

American climbing fern

American  
[uh-mer-i-kuhn klahym-ing furn] / əˈmɛr ɪ kən ˈklaɪm ɪŋ ˌfɜrn /

noun

  1. a sprawling fern, Lygodium palmatum, of the eastern United States, having deeply lobed ivylike leaves. It is the only climbing fern native to North America.