Identity
Unique IDELEMENT_GLOBAL.2.129999
Element CodePDLNT020J0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
IUCNLeast concern
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderScrophulariales
FamilyLentibulariaceae
GenusUtricularia
SynonymsUtricularia inflata var. minorChapman
Other Common NamesLittle Floating Bladderwort (EN) little floating bladderwort (EN) Utriculaire rayonnante (FR)
Concept ReferenceKartesz, 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.
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2024-08-22
Change Date2024-08-22
Edition Date2024-08-22
Edition AuthorsJohnson, J. (2024)
Threat ImpactUnknown
Range Extent>2,500,000 square km (greater than 1,000,000 square miles)
Number of Occurrences> 300
Rank ReasonsUtricularia radiata is an aquatic herb native to the eastern United States and southeastern Canada. Threats to this species include invasive species, alteration of hydrology, development, water pollution, recreation, and likely other threats in some places. With a large range extent, over 500 occurrences, and broad habitat preferences for abundant habitat, this species is considered secure.
Range Extent CommentsUtricularia radiata is native to lower elevations of the eastern United States and southeastern Canada from Nova Scotia south to Florida and east to Texas (Crow 2014). Range extent was estimated using herbarium specimens and photo-based observations documented between 1993 and 2024 (GBIF 2024, iNaturalist 2024, SEINet 2024).
Occurrences CommentsBy applying a 1 km separation distance to herbarium records and photo-based observations documented between 1993 and 2024, there are estimated to be more than 500 occurrences rangewide (GBIF 2024, iNaturalist 2024, SEINet 2024).
Threat Impact CommentsAlthough threats are not widely documented, Utricularia radiata is threatened by invasive species, alteration of hydrology, development, water pollution, recreation, and likely other threats in some places (NatureServe 2024). There is insufficient data, including anecdotal accounts, to understand the scope and severity of threats for this taxon. However, their overall impact is likely negligible given the species' broad range, large number of occurrences, tolerance of light disturbance, and affinity for typically abundant habitats, as well as no obvious intrinsic vulnerabilities.