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Lysimachia thyrsiflora

L.

Water Loosestrife

G5Secure Found in 19 roadless areas NatureServe Explorer →
G5SecureGlobal Rank
Least concernIUCN
UnknownThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.129957
Element CodePDPRI070S0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
IUCNLeast concern
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderPrimulales
FamilyPrimulaceae
GenusLysimachia
Synonyms
Naumburgia thyrsiflora(L.) Duby
Other Common Names
Lysimaque thyrsiflore (FR) Tufted Loosestrife (EN) tufted loosestrife (EN) Tufted Yellow Loosestrife (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 Date2024-08-15
Change Date1984-06-07
Edition Date2024-08-15
Edition AuthorsSoteropoulos (2024)
Threat ImpactUnknown
Range Extent>2,500,000 square km (greater than 1,000,000 square miles)
Number of Occurrences> 300
Rank Reasons
Lysimachia thyrsiflora is a wide-ranging perennial herb in a variety of wetlands with a circumboreal and circum-temperate distribution in the Northern Hemisphere, occurring in Eurasia and North America throughout Canada south to Maryland west to Utah and California in the United States. Threats include development, rights-of-way maintenance, logging, recreational activities, succession, hydrological alteration, invasive species, and deer browsing. Little is known about trends, but with a large range extent and large number of occurrences, abundant habitat, broad habitat preferences, and no obvious intrinsic vulnerabilities, this species is considered secure.
Range Extent Comments
Lysimachia thyrsiflora has a circumboreal and circumtemperate distribution in the Northern Hemisphere, occurring in Eurasia and North America throughout Canada (except Nunavut) south to Maryland west to Utah and California in the United States (FNA 2009).
Occurrences Comments
By applying a 1 km separation distance to herbarium specimens, photo-based observations, and NatureServe Network occurrence data documented between 1993 and 2024, it is estimated that there are thousands of occurrences rangewide (GBIF 2024, iNaturalist 2024, NatureServe 2024, SEINet 2024).
Threat Impact Comments
Although threats are not widely documented, this species is threatened by development, rights-of-way maintenance, logging, recreational activities (especially off-road vehicles), succession, hydrological alteration, invasive species, deer browsing, and other threats in some places (NatureServe 2024). However, their overall impact is likely negligible given the species' broad range, large number of occurrences, and no obvious intrinsic vulnerabilities.
Ecology & Habitat

Habitat

Lysimachia thyrsiflora grows in "bogs, swamps, marshes, wet woods" (FNA 2009).
Palustrine Habitats
HERBACEOUS WETLANDFORESTED WETLANDBog/fen
Other Nations (2)
CanadaN5
ProvinceRankNative
British ColumbiaS5Yes
OntarioS5Yes
Northwest TerritoriesS4Yes
Prince Edward IslandS4Yes
Island of NewfoundlandS1Yes
Yukon TerritoryS2Yes
ManitobaS5Yes
Nova ScotiaS4Yes
SaskatchewanS4Yes
QuebecS4Yes
AlbertaS4Yes
New BrunswickS4Yes
United StatesN5
ProvinceRankNative
IowaS3Yes
VermontS4Yes
MontanaSNRYes
KansasS1Yes
UtahS1Yes
New HampshireS2Yes
ConnecticutSNRYes
MinnesotaSNRYes
MassachusettsSNRYes
New JerseyS3Yes
MarylandS1Yes
MissouriS1Yes
CaliforniaS1Yes
New YorkS4Yes
OregonSNRYes
ColoradoS1Yes
PennsylvaniaS4Yes
IdahoS3Yes
South DakotaSNRYes
MichiganSNRYes
West VirginiaS1Yes
North DakotaSNRYes
NebraskaS4Yes
Rhode IslandSNRYes
WisconsinSNRYes
WyomingS1Yes
IndianaSNRYes
OhioSNRYes
AlaskaS4Yes
MaineSNRYes
IllinoisSNRYes
WashingtonSNRYes
Threat Assessments
ThreatScopeSeverityTiming
1 - Residential & commercial developmentUnknownUnknownUnknown
4 - Transportation & service corridorsUnknownUnknownUnknown
5 - Biological resource useUnknownUnknownUnknown
5.3 - Logging & wood harvestingUnknownUnknownUnknown
6 - Human intrusions & disturbanceUnknownUnknownUnknown
6.1 - Recreational activitiesUnknownUnknownUnknown
7 - Natural system modificationsUnknownUnknownUnknown
7.1 - Fire & fire suppressionUnknownUnknownUnknown
7.1.2 - Suppression in fire frequency/intensityUnknownUnknownUnknown
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
8.2 - Problematic native species/diseasesUnknownUnknownUnknown
8.2.2 - Named speciesUnknownUnknownUnknown

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Plant Characteristics
DurationPERENNIAL
Economic Value (Genus)No
Roadless Areas (19)
Alaska (9)
AreaForestAcres
Bering LakeChugach National Forest965,076
Chugach-12Chugach National Forest8,116
Chugach-13Chugach National Forest13,337
College FiordChugach National Forest1,130,818
Copper River WetlandsChugach National Forest85,972
Fidalgo-GravinaChugach National Forest257,968
KartaTongass National Forest52,117
Sheridan GlacierChugach National Forest224,683
Thorne RiverTongass National Forest72,983
California (4)
AreaForestAcres
Grouse LakesTahoe National Forest19,085
LavaLassen National Forest5,978
MayfieldLassen National Forest14,444
Timbered CraterLassen National Forest4,096
Michigan (1)
AreaForestAcres
Bear SwampHuron-Manistee National Forest3,915
Minnesota (2)
AreaForestAcres
Baker - Homer - Brule LakesSuperior National Forest6,712
Kawishiwi Lake To SawbillSuperior National Forest15,305
Montana (1)
AreaForestAcres
Tenderfoot - Deep CreekLewis and Clark National Forest85,614
Nevada (1)
AreaForestAcres
Pearl PeakHumboldt-Toiyabe National Forest71,405
Vermont (1)
AreaForestAcres
Griffith Lake 09084Green Mountain and Finger Lakes National Forests1,833
References (6)
  1. Flora of North America Editorial Committee (FNA). 2009. Flora of North America north of Mexico. Vol. 8. Magnoliophyta: Paeoniaceae to Ericaceae. Oxford University Press, New York. xxiv + 585 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).