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Plant Database

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Thelypteris simulata

Thelypteris simulata (Davenport) Nieuwl.

Bog Fern, Massachusetts Fern

Thelypteridaceae (Marsh Fern Family)

Synonym(s): Dryopteris simulata, Parathelypteris simulata

USDA Symbol: THSI2

USDA Native Status: L48 (N), CAN (N)

The fronds of bog fern or Massachusetts fern occur singly or in tufts. They are oval and pointed, with pinnae are longest near the middle. None of the 18 in. fronds is evergreen.


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Plant Characteristics

Duration: Perennial
Habit: Herb , Fern
Leaf Retention: Evergreen
Size Class: 1-3 ft.

Bloom Information

Bloom Color: Not Applicable
Bloom Notes: Not a flowering plant. Reproduces by spores.


USA: AL , CT , DC , DE , MA , MD , ME , NC , NH , NJ , NY , PA , RI , TN , VA , VT , WI , WV
Canada: NB , NS , PE
Native Distribution: S.w. N.S. & s. ME to e. VA; inland locally to e. VT, s.w. Que. & c. NY
Native Habitat: Swampy woods & thickets; knolls in bogs

Growing Conditions

Light Requirement: Part Shade
Soil Moisture: Wet
Soil pH: Acidic (pH<6.8)
Soil Description: Wet or moist soils.
Conditions Comments: Not Available


Description: Not Available
Seed Collection: Not Available
Seed Treatment: Not Available
Commercially Avail: yes

National Wetland Indicator Status

This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

Additional resources

USDA: Find Thelypteris simulata in USDA Plants
FNA: Find Thelypteris simulata in the Flora of North America (if available)
Google: Search Google for Thelypteris simulata


Record Modified: 2007-01-01
Research By: TWC Staff

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