Classification
Within iNaturalist.org

All Names

  • French
    • cystoptère à tige avancée
  • English
    • lowland brittle fern
  • Scientific Names
    • Cystopteris protrusa
    • Cystopteris fragilis protrusa

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Recent observations

Photos / Sounds

16716618317 096b1dd804 s

What

lowland brittle fern Cystopteris protrusa

Observer

layla

Date

March 23, 2015

Place

Dupont, TN (Google, OSM)

Photos / Sounds

What

lowland brittle fern Cystopteris protrusa

Observer

matthewherron

Date

March 22, 2015 12:49 PM CDT

Photos / Sounds

What

lowland brittle fern Cystopteris protrusa

Observer

matthewherron

Date

March 22, 2015 12:48 PM CDT

Photos / Sounds

Square

What

lowland brittle fern Cystopteris protrusa

Observer

floracliff

Date

May 27, 2014

Description

Dryopteridaceae | fragile fern

Occasional in rich woods.

Photos / Sounds

Square

What

lowland brittle fern Cystopteris protrusa

Observer

ctracey

Date

May 8, 2014 01:44 PM EDT

Photos / Sounds

What

lowland brittle fern Cystopteris protrusa

Observer

julbar

Date

May 7, 2014

Description

I just don't know this one

Photos / Sounds

Square

What

lowland brittle fern Cystopteris protrusa

Observer

rcurtis

Date

April 26, 2014

Photos / Sounds

Square

What

lowland brittle fern Cystopteris protrusa

Observer

dlcarterksu

Date

May 3, 2014

Description

Moist slope with Carex pennsylvanica, Asarum canadense, Dentaria concatenata, Allium tricoccum, and Podophyllum peltatum.

Photos / Sounds

What

lowland brittle fern Cystopteris protrusa

Observer

dlcarterksu

Date

April 30, 2014

Photos / Sounds

Square

What

lowland brittle fern Cystopteris protrusa

Observer

mn2010

Date

April 25, 2014 05:15 PM CDT

Description

Southern Fragile Fern

Photos / Sounds

What

lowland brittle fern Cystopteris protrusa

Observer

elfaulkner

Date

June 29, 2010

Photos / Sounds

Square

What

lowland brittle fern Cystopteris protrusa

Observer

elfaulkner

Date

April 22, 2012
View all observations

Description from Wikipedia

Cystopteris protrusa is a common fern of eastern North America. Throughout much of its range, it is the most common Cystopteris. It is commonly known as the lowland brittle fern or lowland fragile fern. The specific name, protrusa, refers to the fact that the rhizome protrudes a short distance beyond the current year's fronds to form the following year's leaf buds. This protrusion is a positive diagnostic in the field. Sori are round and covered in...

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Conservation Summary

No range data available.