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Home/Species/ Bog Willow

Salix pedicellaris

Pursh

Bog Willow

G5Secure Found in 3 roadless areas NatureServe Explorer →
G5SecureGlobal Rank
Least concernIUCN
LowThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.135178
Element CodePDSAL02240
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
IUCNLeast concern
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderSalicales
FamilySalicaceae
GenusSalix
Other Common Names
bog willow (EN) Saule pédicellé (FR)
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 - Excel v3.2x
Review Date2024-09-03
Change Date1984-09-06
Edition Date2024-09-03
Edition AuthorsNordman, C. (2024).
Threat ImpactLow
Range Extent>2,500,000 square km (greater than 1,000,000 square miles)
Number of Occurrences> 300
Rank Reasons
Bog Willow (Salix pedicellaris) occurs in northern North America, across Canada and the northern United States. There are estimated to be more than 600 occurrences, many with good or excellent viability. Threats include the loss of habitat due to conversion of natural wetlands for development or agriculture, water management and impoundment with dams, and invasive exotic species.
Range Extent Comments
Bog Willow (Salix pedicellaris) occurs in northern North America, across Canada and the northern United States. It occurs in Canada from Newfoundland, Labrador, Nova Scotia, Québec and Nunavut to British Columbia and Yukon, and in the United States from Maine to the Great Lakes region, Upper Midwest, and Pacific Northwest. Range extent was estimated to be 10 million square kilometers using herbarium specimens and photo-based observations documented between 1993 and 2024 (FNA 2010, GBIF 2024, iNaturalist 2024, POWO 2024, SEINet 2024).
Occurrences Comments
By 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 600 occurrences of Bog Willow rangewide (GBIF 2024, iNaturalist 2024, SEINet 2024).
Threat Impact Comments
Threats to Bog Willow include the loss of habitat due to conversion of natural wetlands for development or agriculture, water management and impoundment with dams, and invasive exotic species.
Ecology & Habitat

Habitat

Bog Willow (Salix pedicellaris) occurs in Sphagnum bogs, fens, and Black Spruce treed bogs, at 0-1400 meters elevation (FNA 2010).

Reproduction

Flowers from the middle of April to the middle of July (FNA 2010).
Palustrine Habitats
HERBACEOUS WETLANDSCRUB-SHRUB WETLANDFORESTED WETLANDBog/fen
Other Nations (2)
CanadaN5
ProvinceRankNative
Prince Edward IslandS1Yes
British ColumbiaS5Yes
Yukon TerritoryS3Yes
OntarioS5Yes
Northwest TerritoriesSNRYes
NunavutS3Yes
LabradorS4Yes
SaskatchewanS4Yes
AlbertaS5Yes
QuebecS5Yes
Nova ScotiaS3Yes
ManitobaS5Yes
New BrunswickS3Yes
Island of NewfoundlandS2Yes
United StatesN5
ProvinceRankNative
MaineS4Yes
IllinoisSNRYes
WashingtonSNRYes
WisconsinSNRYes
Rhode IslandSHYes
OhioS1Yes
North DakotaS3Yes
ConnecticutS1Yes
IowaS2Yes
MassachusettsS2Yes
MichiganSNRYes
PennsylvaniaS1Yes
IdahoS2Yes
MinnesotaSNRYes
IndianaSNRYes
New YorkS5Yes
New HampshireS2Yes
VermontS2Yes
New JerseyS1Yes
OregonSNRYes
Threat Assessments
ThreatScopeSeverityTiming
1 - Residential & commercial developmentSmall (1-10%)Serious or 31-70% pop. declineHigh (continuing)
1.1 - Housing & urban areasSmall (1-10%)Serious or 31-70% pop. declineHigh (continuing)
2 - Agriculture & aquacultureSmall (1-10%)Serious or 31-70% pop. declineHigh (continuing)
2.1 - Annual & perennial non-timber cropsSmall (1-10%)Serious or 31-70% pop. declineHigh (continuing)
7 - Natural system modificationsNegligible (<1%)Serious or 31-70% pop. declineHigh (continuing)
7.2 - Dams & water management/useNegligible (<1%)Serious or 31-70% pop. declineHigh (continuing)
8 - Invasive & other problematic species, genes & diseasesRestricted (11-30%)Moderate or 11-30% pop. declineHigh (continuing)
8.1 - Invasive non-native/alien species/diseasesRestricted (11-30%)Moderate or 11-30% pop. declineHigh (continuing)

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Plant Characteristics
DurationEVERGREEN, SPRING-FLOWERING, SUMMER-FLOWERING
Economic Value (Genus)Yes
Roadless Areas (3)
Minnesota (1)
AreaForestAcres
Wood LakeSuperior National Forest596
Oregon (1)
AreaForestAcres
West - South BachelorDeschutes National Forest25,994
Wisconsin (1)
AreaForestAcres
09164 - Tea LakeChequamegon-Nicolet National Forest5,510
References (8)
  1. Dodds, Jill S. 2022. <i>Salix pedicellaris</i> Rare Plant Profile. New Jersey Department of Environmental Protection, State Parks, Forests and Historic Sites, State Forest Fire Service and Forestry, Office of Natural Lands Management, New Jersey Natural Heritage Program, Trenton, NJ. 17 pp. [https://nj.gov/dep/parksandforests/natural/heritage/docs/salix-pedicellaris-bog-willow.pdf]
  2. Dodds, J.S. 2022. Salix pedicellaris</i> Rare Plant Profile. New Jersey Department of Environmental Protection, State Parks, Forests & Historic Sites, State Forest Fire Service & Forestry, Office of Natural Lands Management, New Jersey Natural Heritage Program, Trenton, NJ. 17 pp. [https://www.nj.gov/dep/parksandforests/natural/heritage/docs/salix-pedicellaris-bog-willow.pdf]
  3. Flora of North America Editorial Committee (FNA). 2010. Flora of North America north of Mexico. Vol. 7. Magnoliophyta: Salicaceae to Brassicaceae. Oxford University Press, New York. xxii + 797 pp.
  4. Global Biodiversity Information Facility (GBIF). 2024. Global Biodiversity Information Facility (GBIF) data portal. Online. Available: https://www.gbif.org/ (accessed 2024).
  5. iNaturalist. 2024. Online. Available: https://www.inaturalist.org (accessed 2024).
  6. 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.
  7. Plants of the World Online (POWO). 2024. Plants of the World Online. Facilitated by the Royal Botanic Gardens, Kew. Online. Available: https://powo.science.kew.org/ (accessed 2024).
  8. Southwest Environmental Information Network (SEINet). 2024. Collections Databases. Online. Available: https://swbiodiversity.org/seinet/collections/index.php (accessed 2024).