Bracken Fern
Pteridium aquilinum (L.) Kuhn var. latiusculum (Desv.) Underw.
Reproduces by spores and dark, spreading underground rhizomes. Emerging fronds are hairy and fiddlehead-like but unfold into compound fronds that are triangular in outline on long woody stalks. In mid-summer, bands of dark spores are produced on the undersides of fronds.