Nutt.
Identity
Unique IDELEMENT_GLOBAL.2.132792
Element CodePMSPA01010
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
IUCNLeast concern
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomPlantae
PhylumAnthophyta
ClassMonocotyledoneae
OrderTyphales
FamilyTyphaceae
GenusSparganium
Other Common NamesAmerican bur-reed (EN) Rubanier d'Amérique (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 Date2025-01-10
Change Date1984-09-06
Edition Date2025-01-10
Edition AuthorsN. Ventrella (2025)
Threat ImpactUnknown
Range Extent>2,500,000 square km (greater than 1,000,000 square miles)
Number of Occurrences> 300
Rank ReasonsSparganium americanum is an aquatic perennial monocot occurring in a variety of wetland habitats from Manitoba east to Newfoundland and Labrador, south to Florida, and west to Texas in the United States and Canada, and also in Mexico. There are over 1,000 estimated occurrences rangewide, which are potentially threatened by development, water diversion, alteration of hydrology, erosion, pollution, recreational activities, invasive species, drought, and other threats in some places. Little is known about threats and trends, but with a large range extent, high number of occurrences, abundant habitat, broad habitat preferences, and no obvious intrinsic vulnerabilities, Sparganium americanum is considered secure.
Range Extent CommentsSparganium americanum occurs in eastern North America from Manitoba east to Newfoundland and Labrador, south to Florida and west to Texas in the United States and Canada (FNA 2000). This species also occurs in Mexico. Range extent was estimated using herbarium specimens, photo-based observations, and NatureServe Network occurrence data collected between 1994 and 2025 (GBIF 2025, iNaturalist 2025, NatureServe 2025, SEINet 2025).
Occurrences CommentsBy applying a 1 km separation distance to herbarium specimens, photo-based observations, and NatureServe Network occurrence data documented between 1994 and 2025, it is estimated that there are over 1,000 occurrences rangewide (GBIF 2025, iNaturalist 2025, NatureServe 2025, SEINet 2025).
Threat Impact CommentsAlthough threats are not widely documented, Sparganium americanum is likely threatened by development, water diversion, alteration of hydrology, erosion, pollution, recreational activities, invasive species, drought, and other threats in some places, though there is insufficient data, including anecdotal accounts, to understand the scope and severity of threats for this species.