Home/Species/ Tennessee Bladderfern

Cystopteris tennesseensis

Shaver

Tennessee Bladderfern

G5Secure Found in 1 roadless area NatureServe Explorer →

G5SecureGlobal Rank

Identity

Unique IDELEMENT_GLOBAL.2.129017

Element CodePPDRY07080

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

Endemicendemic to a single nation

KingdomPlantae

PhylumFilicinophyta

ClassFilicopsida

OrderPolypodiales

FamilyCystopteridaceae

GenusCystopteris

Synonyms

Cystopteris x tennesseensisShaver

Other Common Names

Tennessee bladderfern (EN) Tennessee Bladder Fern (EN)

Concept Reference

Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.

Taxonomic Comments

While this species has sometimes been treated as hybrid (as C. x tennesseensis), it is accepted as a fertile, allotetraploid species of hybrid origin, derived from a cross between C. bulbifera and C. protusa (FNA 1993, vol. 2). This species is included as a fertile hybrid in a synopsis of the genus (Shmakov et al. 2018), and the generic placement of this taxon, in Cystopteris, is in accordance with the Pteridophyte Phylogeny Group I (2016).

Conservation Status

Review Date1986-11-18

Change Date1986-11-18

Threat Impact Comments

Highly threatened by habitat loss and fragmentation and by forest management practices (Southern Appalachian Species Viability Project 2002).

Ecology & Habitat

Other Nations (1)

United StatesN5

Province	Rank	Native
South Carolina	SNR	Yes
Indiana	SNR	Yes
Arkansas	SNR	Yes
Tennessee	SNR	Yes
Virginia	S1	Yes
Illinois	SNR	Yes
Kentucky	S4	Yes
Wisconsin	SNR	Yes
Kansas	S4	Yes
Oklahoma	SNR	Yes
West Virginia	S2	Yes
Maryland	S1	Yes
Georgia	S1	Yes
Ohio	S3	Yes
North Carolina	S1	Yes
Iowa	SNR	Yes
Alabama	S2	Yes
Minnesota	SNR	Yes
Missouri	SNR	Yes
Pennsylvania	S1	Yes
Delaware	SNA	No

Plant Characteristics

Economic Value (Genus)No

Roadless Areas (1)

Arkansas (1)

Area	Forest	Acres
Pedestal Rocks	Ozark-St. Francis National Forest	21,957

References (6)

Flora of North America Editorial Committee (FNA). 1993a. Flora of North America north of Mexico. Vol. 2. Pteridophytes and gymnosperms. Oxford Univ. Press, New York. xvi + 475 pp.
Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Pteridophyte Phylogeny Group I. 2016. A Community-Derived Classification for Extant Lycophytes and Ferns. Journal of Systematics and Evolution 54(6): 563–603.
Shmakov, A.I., Batkin, A.A., and A.V. Vaganov. 2018. Synopsis of the genus <i>Cystopteris</i> Bernh. (Cystopteridaceae). Ukrainian Journal of Ecology 8(4): 290-297.
Southern Appalachian Species Viability Project. 2002. A partnership between the U.S. Forest Service-Region 8, Natural Heritage Programs in the Southeast, NatureServe, and independent scientists to develop and review data on 1300+ regionally and locally rare species in the Southern Appalachian and Alabama region. Database (Access 97) provided to the U.S. Forest Service by NatureServe, Durham, North Carolina.
Weakley, A.S., and Southeastern Flora Team. 2024. Flora of the southeastern United States. Edition of March 4, 2024. University of North Carolina Herbarium (NCU), North Carolina Botanical Garden, University of North Carolina, Chapel Hill. 2203 pp.