Noun: sensitive fern sen-su-tiv furn
- Beautiful spreading fern of eastern North America and eastern Asia naturalized in western Europe; pinnately divided fronds show a slight tendency to fold when touched; pinnules enclose groups of sori in beadlike lobes
"Sensitive fern got its name from its reaction to frost";
- bead fern, Onoclea sensibilis
Derived forms: sensitive ferns
Type of: fern
Part of: genus Onoclea, Onoclea
Encyclopedia: Sensitive fern