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Bidens laevis

(L.) B.S.P.

Smooth Bur-marigold

G5Secure Found in 3 roadless areas NatureServe Explorer →
G5SecureGlobal Rank
UnknownThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.129267
Element CodePDAST180Y0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderAsterales
FamilyAsteraceae
GenusBidens
Other Common Names
smooth beggarticks (EN) Smooth Beggarticks (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.
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2024-06-27
Change Date1984-02-14
Edition Date2024-06-27
Edition AuthorsN. Ventrella (2024)
Threat ImpactUnknown
Range Extent>2,500,000 square km (greater than 1,000,000 square miles)
Number of Occurrences> 300
Rank Reasons
Bidens laevis is a widespread annual herb occurring in marshes, pool margins, streams, estuaries, and meadows of North America, Mexico, Central America, and South America and as an introduced species to the Pacific Islands. There are over 900 occurrences of this species, which are threatened by development, invasive species, erosion, and changes to hydrology. Little is known about trends, but with a large range extent, large number of occurrences, and no obvious intrinsic vulnerabilities, this species is considered secure.
Range Extent Comments
Bidens laevis occurs as a native species in North America, Mexico, Central America, and South America and in the Pacific Islands as an introduced species (FNA 2006). In the United States, it occurs from Maine south to Florida, north to Missouri, and west to California. Range extent was estimated to be over 36 million square kilometers using herbarium specimens and photo-based observations documented between 1993 and 2024 (GBIF 2024, iNaturalist 2024, SEINet 2024).
Occurrences Comments
By applying a 1 km separation distance to herbarium specimens and photo-based observations documented between 1993 and 2024, it is estimated that there are over 900 occurrences rangewide (GBIF 2024, iNaturalist 2024, SEINet 2024).
Threat Impact Comments
Although threats are not widely documented, Bidens laevis is threatened by development, invasive species, erosion, changes to hydrology, and other threats in some places (NatureServe 2024). However, their overall impact is likely negligible given species' broad range, large number of occurrences, tolerance of light disturbance, and affinity for typically abundant habitats, as well as no obvious intrinsic vulnerabilities.
Ecology & Habitat

Habitat

Bidens laevis occurs in "meadows, marshes, and margins of pools, streams, [and] estuaries" (FNA 2006).
Terrestrial Habitats
Grassland/herbaceous
Palustrine Habitats
HERBACEOUS WETLANDFORESTED WETLANDRiparian
Other Nations (1)
United StatesN5
ProvinceRankNative
MassachusettsSNRYes
ArkansasSNRYes
Rhode IslandSNRYes
OhioSNRYes
MarylandSNRYes
PennsylvaniaS1Yes
New HampshireS1Yes
VirginiaS5Yes
CaliforniaSNRYes
AlabamaSNRYes
NevadaS2Yes
FloridaSNRYes
West VirginiaS4Yes
KentuckyS5Yes
DelawareS4Yes
MichiganSNRYes
New MexicoSNRYes
ConnecticutSNRYes
IndianaSNRYes
GeorgiaSNRYes
New JerseyS5Yes
MissouriS1Yes
District of ColumbiaSNRYes
TexasSNRYes
MississippiSNRYes
North CarolinaS3Yes
LouisianaSNRYes
ColoradoSNRYes
South CarolinaS4Yes
New YorkS2Yes
ArizonaS3Yes
TennesseeSNRYes
OklahomaSNRYes
Threat Assessments
ThreatScopeSeverityTiming
1 - Residential & commercial developmentUnknownUnknownUnknown
7 - Natural system modificationsUnknownUnknownUnknown
7.2 - Dams & water management/useUnknownUnknownUnknown
8 - Invasive & other problematic species, genes & diseasesUnknownUnknownUnknown
8.1 - Invasive non-native/alien species/diseasesUnknownUnknownUnknown
8.1.1 - Unspecified speciesUnknownUnknownUnknown
9 - PollutionUnknownUnknownUnknown
9.3 - Agricultural & forestry effluentsUnknownUnknownUnknown
9.3.2 - Soil erosion, sedimentationUnknownUnknownUnknown

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Plant Characteristics
DurationANNUAL, PERENNIAL, Short-lived
Economic Value (Genus)No
Roadless Areas (3)
Texas (1)
AreaForestAcres
Little Lake CreekNational Forests in Texas596
West Virginia (2)
AreaForestAcres
Cranberry Glades Botanical AreaMonongahela National Forest785
Falls Of Hills CreekMonongahela National Forest6,925
References (6)
  1. Flora of North America Editorial Committee (FNA). 2006c. Flora of North America north of Mexico. Vol. 21. Magnoliophyta: Asteridae, part 8: Asteraceae, part 3. Oxford Univ. Press, New York. xxii + 616 pp.
  2. Global Biodiversity Information Facility (GBIF). 2024. Global Biodiversity Information Facility (GBIF) data portal. Online. Available: https://www.gbif.org/ (accessed 2024).
  3. iNaturalist. 2024. Online. Available: https://www.inaturalist.org (accessed 2024).
  4. 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.
  5. NatureServe. 2024. NatureServe Network Biodiversity Location Data. NatureServe, Arlington, Virginia.
  6. Southwest Environmental Information Network (SEINet). 2024. Collections Databases. Online. Available: https://swbiodiversity.org/seinet/collections/index.php (accessed 2024).