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Erigeron aliceae

T.J. Howell

Alice's Fleabane

G4Apparently Secure Found in 21 roadless areas NatureServe Explorer →
G4Apparently SecureGlobal Rank
UnknownThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.129161
Element CodePDAST3M040
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single nation
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderAsterales
FamilyAsteraceae
GenusErigeron
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 Date2026-03-03
Change Date1994-02-08
Edition Date2026-03-03
Edition AuthorsSoteropoulos (2026)
Threat ImpactUnknown
Range Extent20,000-200,000 square km (about 8000-80,000 square miles)
Number of Occurrences81 - 300
Rank Reasons
Erigeron aliceae is a wide-ranging perennial herb found in open, dry to moist habitats, including rocky ridges and slopes, talus slopes, subalpine wet meadows, prairies, open roadsides, chaparral, and openings in fir and hemlock-fir woodlands. It is endemic to the western United States from western Washington south to northwestern California. There are over 100 occurrences, which potentially face threats from goat grazing and trampling as well as increased temperatures and other impacts from climate change. Little is known about trends, but with a large range extent and large number of occurrences, abundant habitat, and broad habitat preferences, this species is considered apparently secure.
Range Extent Comments
Erigeron aliceae is endemic to the western United States from western Washington south to northwestern California (FNA 2006, Jepson Flora Project 2026, OSU 2026, Washington Field Guide 2026). Range extent was estimated to be over 90,000 square kilometers using herbarium specimens, photo-based observations, and NatureServe Network occurrence data documented between 1994 and 2025 (RARECAT 2025, GBIF 2026, iNaturalist 2026, NatureServe 2026, SEINet 2026).
Occurrences Comments
By 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 100 occurrences rangewide (RARECAT 2025, GBIF 2026, iNaturalist 2026, NatureServe 2026, SEINet 2026).
Threat Impact Comments
Although threats are not widely documented, this species is potentially threatened by goat grazing and trampling as well as increased temperatures and other impacts from climate change (Fertig 2021, Washington Field Guide 2026).
Ecology & Habitat

Habitat

Erigeron aliceae grows in open, dry to moist habitats, including rocky ridges and slopes, talus slopes, subalpine wet meadows, prairies, open roadsides, chaparral, and openings in fir and hemlock-fir woodlands, sometimes on serpentine soils in Oregon and California (FNA 2006, Jepson Flora Project 2026, OSU 2026, Washington Field Guide 2026).

Reproduction

This species flowers from June to August, sometimes into September (FNA 2006).
Terrestrial Habitats
Woodland - ConiferWoodland - MixedShrubland/chaparralGrassland/herbaceousBarrensBare rock/talus/scree
Other Nations (1)
United StatesN4
ProvinceRankNative
OregonSNRYes
CaliforniaSNRYes
WashingtonS2Yes
Threat Assessments
ThreatScopeSeverityTiming
2 - Agriculture & aquacultureUnknownUnknownHigh (continuing)
2.3 - Livestock farming & ranchingUnknownUnknownHigh (continuing)
11 - Climate change & severe weatherUnknownUnknownModerate (short-term)

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Plant Characteristics
DurationPERENNIAL
Economic Value (Genus)No
Roadless Areas (21)
California (5)
AreaForestAcres
Blue Creek Rare ISix Rivers National Forest12,134
Indian CreekKlamath National Forest5,011
JohnsonKlamath National Forest10,652
KangarooKlamath National Forest40,617
Orleans Mtn.Klamath National Forest49,090
Oregon (15)
AreaForestAcres
Bull Of The WoodsMt. Hood National Forest8,843
Calf - Copeland CreekUmpqua National Forest15,696
Castle Rock AppendageUmpqua National Forest4,649
Chucksney MountainWillamette National Forest15,369
DoneganUmpqua National Forest5,914
Echo MountainWillamette National Forest8,098
FairviewUmpqua National Forest7,417
French Pete (a)Willamette National Forest1,668
Jackson Creek AppendageUmpqua National Forest4,673
Maiden PeakWillamette National Forest9,627
Mclennon MountainWillamette National Forest8,085
Opal CreekWillamette National Forest5,417
Rolling Grounds AppendageUmpqua National Forest1,987
Twin LakesMt. Hood National Forest6,055
Waldo - FujiWillamette National Forest15,273
Washington (1)
AreaForestAcres
Upper SkokomishOlympic National Forest9,311
References (11)
  1. Fertig, W. 2021. Climate Change Vulnerability Index Report: <i>Erigeron aliceae </i>(Alice's fleabane). Washington Natural Heritage Program. [https://dnr.wa.gov/sites/default/files/2025-03/amp_nh_ccvi_eral3.pdf]
  2. Flora of North America Editorial Committee (FNA). 2006b. Flora of North America north of Mexico. Vol. 20. Magnoliophyta: Asteridae, part 7: Asteraceae, part 2. Oxford Univ. Press, New York. xxii + 666 pp.
  3. Global Biodiversity Information Facility (GBIF). 2026. Global Biodiversity Information Facility (GBIF) data portal. Online. Available: https://www.gbif.org/ (accessed 2026).
  4. iNaturalist. 2026. Online. Available: https://www.inaturalist.org (accessed 2026).
  5. Jepson Flora Project (eds.) 2026. Jepson eFlora. Online. Available: https://ucjeps.berkeley.edu/eflora/ (accessed 2026).
  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. NatureServe. 2026. NatureServe Network Biodiversity Location Data. NatureServe, Arlington, Virginia.
  8. Oregon State University (OSU). 2026. Oregon Flora website. Oregon State University Herbarium at Oregon State University. Online. Available: https://oregonflora.org/ (accessed 2026).
  9. <p>NatureServe's Rapid Analysis of Rarity and Endangerment Conservation Assessment Tool (RARECAT). 2025. Version: 2.1.1 (released April 04, 2025).</p>
  10. Southwest Environmental Information Network (SEINet). 2026. Collections Databases. Online. Available: https://swbiodiversity.org/seinet/collections/index.php (accessed 2026).
  11. Washington Field Guides. 2026. Online. Available: https://fieldguide.mt.gov/wa/ (accessed 2026).