Sensitive Fern
Sensitive Fern
Onoclea sensibilis
Wood Fern Family --- Dryopteridaceae
Leaves triangular in shape and only once divided into 5 to 10 pairs of leaflets usually with wavy margins. Bases of leaflets joined especially from middle to tip of leaf forming a kind of wing along the leaf axis.
In moist areas of hardwood and conifer forests, a somewhat short (20 to 30 inches tall) fern, each plant with relatively few leaves arising from underground stems.
Tightly arranged clusters of spore cases occur terminally on separate fertile leaves. Green initially and then turning dark brown.
(Photographed at Eagle Lake - August 18, 2002 and modified August 8, 2009)
  Pathology Images Inc. 2001 & 2009