WHERE’S WILDLIFE • FERN & HORSETAIL FIELD GUIDE

Sensitive Fern

Onoclea sensibilis

Also called Bead Fern.

Broad, deeply lobed green fronds spread through damp ground. Separate beadlike fertile fronds provide a distinctive seasonal clue.

Sensitive Fern. Select the photo to open the gallery.

NATIVE • NORTH AMERICA

At a glance

Plant group Fern
Life cycle Perennial
Reproduction Spores
Habitat Wet woods, damp clearings, and wetland edges

Sightings map

Explore reported observations. Sightings are not a complete range map.

How to recognize it

Key identification clues

  • Sterile fronds have broad lobes and a winged central axis.
  • Green fronds arise along spreading underground rhizomes.
  • Separate fertile fronds carry beadlike segments that turn brown and may persist into winter.

Where and when to look

Look in moist or wet ground, in sun or shade. The name refers to foliage that is sensitive to frost and drought.

Compare similar plants

Check the broad lobes and winged axis rather than relying on color. Fertile beadlike fronds are especially helpful when present.

A closer look

Broad green lobes

The leafy fronds have a much coarser outline than finely divided woodland ferns. Close views show the connected lobes and netted veins.

Beadlike fertile fronds

The smaller fertile fronds have tightly modified segments around their spore-producing structures. These differ greatly from the green leafy fronds.

Spreading colonies

Underground rhizomes produce patches of fronds. The gallery focuses on leafy fronds, developing growth, and habitat; it does not yet document the beadlike fertile stage.

Field photographs

7 selected field photographs. Select any image to enlarge it and browse the slideshow.

Range & habitat

A widespread fern of eastern North America, growing in damp woods and other moist to wet habitats.

Explore related content

Sources & further reading

Field photographs: Where’s Wildlife.

Comments & Identification Feedback

Spotted a possible identification error or have an observation to share? Leave a comment below. For an ID correction, include the photo filename and the features that support your suggestion.

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