Southern Adderstongue Fern found growing in Talbot Co., Maryland (4/10/2012).

Photo by Jim Brighton MBP List

Southern Adderstongue Ferns in Queen Anne's Co., Maryland (6/25/2019).

View Record Details Photo by Lori Byrne MBP List

Southern Adderstongue Fern in Worcester Co., Maryland (4/11/2021). (c) tomfeild, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 364357 - Psn: 35)

Southern Adderstongue Fern in Worcester Co., Maryland (4/11/2021). (c) tomfeild, some rights reserved (CC BY-NC).

View Record Details Photo by Tom Feild MBP List

Southern Adderstongue Fern growing in Kent Co., Maryland (4/30/2016).

View Record Details Photo by Nancy Martin MBP List

Southern Adderstongue Fern in Talbot Co., Maryland (4/10/2021). (c) Jim Brighton, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 358833 - Psn: 50)

Southern Adderstongue Fern in Talbot Co., Maryland (4/10/2021). (c) Jim Brighton, some rights reserved (CC BY-NC).

View Record Details Photo by Jim Brighton MBP List

Southern Adderstongue Fern in Anne Arundel Co., Maryland (4/16/2006).

Photo by Wayne Longbottom MBP List

Southern Adderstongue Fern in Calvert Co., Maryland (4/27/2017).

View Record Details Photo by Karyn Molines MBP List

A Southern Adderstongue Fern in Kent Co., Maryland (4/16/2015).

View Record Details Photo by Nancy Martin MBP List

Southern Adderstongue Fern in Talbot Co., Maryland (5/6/2019).

View Record Details Photo by Wayne Longbottom MBP List

Southern Adderstongue Ferns in Dorchester Co., Maryland (5/28/2018).

View Record Details Photo by Jim Brighton MBP List

Southern Adderstongue Fern in Talbot Co., Maryland (5/12/2013).

View Record Details Photo by Jared Satchell MBP List

Southern Adderstongue Fern in Montgomery Co., Maryland (4/22/2026). (c) David Anderson, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>) (Photo ID: 1495322 - Psn: 200)

Southern Adderstongue Fern in Montgomery Co., Maryland (4/22/2026). (c) David Anderson, some rights reserved (CC BY-NC)

View Record Details Photo by David Anderson via iNaturalist MBP List

Map Snapshot

103 Records

GA AL WA FR CL MO HO BA BC HA CE PG AA CV CH SM KE QA CN TA DO WI SO WO

Status

Most sources treat this species (Southern Adder’s-Tongue) in North America as a synonym of the European Ophioglossum vulgatum. However, Weakley (2020, Flora Southeastern US) prefers the name Ophioglossum pycnostichum. Hopefully future studies of this species will uncover the relationship between North American and European populations.

Seasonality Summary

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Resources

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View at Maryland Plant Atlas Search Flora of North America Search Mid-Atlantic Herbaria Consortium Search Norton-Brown Herbarium Search MNPS Facebook posts

Citations

No citations linked for this taxon yet.

Use of media featured on Maryland Biodiversity Project is only permitted with express permission of the photographer.

Southern Adderstongue Fern found growing in Talbot Co., Maryland (4/10/2012). Media by Jim Brighton.

Southern Adderstongue Ferns in Queen Anne's Co., Maryland (6/25/2019). View Record Details Media by Lori Byrne.

Southern Adderstongue Fern in Worcester Co., Maryland (4/11/2021). (c) tomfeild, some rights reserved (CC BY-NC). View Record Details Media by Tom Feild.

Southern Adderstongue Fern growing in Kent Co., Maryland (4/30/2016). View Record Details Media by Nancy Martin.

Southern Adderstongue Fern in Talbot Co., Maryland (4/10/2021). (c) Jim Brighton, some rights reserved (CC BY-NC). View Record Details Media by Jim Brighton.

Southern Adderstongue Fern in Anne Arundel Co., Maryland (4/16/2006). Media by Wayne Longbottom.

Southern Adderstongue Fern in Calvert Co., Maryland (4/27/2017). View Record Details Media by Karyn Molines.

A Southern Adderstongue Fern in Kent Co., Maryland (4/16/2015). View Record Details Media by Nancy Martin.

Southern Adderstongue Fern in Talbot Co., Maryland (5/6/2019). View Record Details Media by Wayne Longbottom.

Southern Adderstongue Ferns in Dorchester Co., Maryland (5/28/2018). View Record Details Media by Jim Brighton.

Southern Adderstongue Fern in Talbot Co., Maryland (5/12/2013). View Record Details Media by Jared Satchell.

Southern Adderstongue Fern in Montgomery Co., Maryland (4/22/2026). (c) David Anderson, some rights reserved (CC BY-NC) View Record Details Media by David Anderson via iNaturalist.