Classification
Within iNaturalist.org

All Names

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

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Recent observations

Photos / Sounds

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What

lowland brittle fern Cystopteris protrusa

Observer

cjosefson

Date

April 23, 2016 03:47 PM CDT

Photos / Sounds

What

lowland brittle fern Cystopteris protrusa

Observer

dlcarterksu

Date

April 15, 2016 12:10 PM CDT

Photos / Sounds

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What

lowland brittle fern Cystopteris protrusa

Observer

rcurtis

Date

April 8, 2016 03:09 PM EDT

Photos / Sounds

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What

lowland brittle fern Cystopteris protrusa

Observer

choess

Date

April 8, 2016 07:01 PM EDT

Photos / Sounds

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What

lowland brittle fern Cystopteris protrusa

Observer

coreyjlange

Date

April 7, 2016 06:34 PM CDT

Photos / Sounds

What

lowland brittle fern Cystopteris protrusa

Observer

flosi

Date

April 3, 2016 05:12 PM EDT

Photos / Sounds

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What

lowland brittle fern Cystopteris protrusa

Observer

bendingtree

Date

March 30, 2016

Description

Common; rich floodplain woods.

Photos / Sounds

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What

lowland brittle fern Cystopteris protrusa

Observer

coreyjlange

Date

March 26, 2016

Photos / Sounds

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What

lowland brittle fern Cystopteris protrusa

Observer

layla

Date

March 26, 2016

Place

Dupont, TN (Google, OSM)

Photos / Sounds

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What

lowland brittle fern Cystopteris protrusa

Observer

sedge

Date

March 20, 2016 12:13 PM CDT

Description

Growing on a mesic slope above the Sangamon River floodplain.

Photos / Sounds

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What

lowland brittle fern Cystopteris protrusa

Observer

choess

Date

April 20, 2010 07:12 PM EDT

Description

Lowland fragile fern.

Photos / Sounds

Square

What

lowland brittle fern Cystopteris protrusa

Observer

mmcmasters

Date

March 19, 2013

Tags

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.
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