Interrupted fern

Prepared by Jennifer L. D’Appollonio, Assistant Scientist, University of Maine, Orono, ME 04469. Updated February 2018.

Scientific name: Osmunda claytoniana L.

Common name(s): interrupted fern

Links: USDA PLANTS Profile, NPIN Profile, Go Botany

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– perennial

Reproduces by spores and creeping rootstocks.  Leaves 2′-6′ long, covered with densely matted wool-like hairs when young, leaf blades oblong to lance-shaped 1′-4′ long.  Spores borne on non-leafy stalks, mid-way up interrupting leaf blade, greenish at first, becoming dark brown and brittle with age.

– may be confused with Osmundastrum cinnamomeum; see left sidebar of Go Botany webpage