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Erigeron strigosus

Muhl. ex Willd.

Daisy Fleabane

G5Secure Found in 19 roadless areas NatureServe Explorer →

G5SecureGlobal Rank

UnknownThreat Impact

Identity

Unique IDELEMENT_GLOBAL.2.132001

Element CodePDAST3M3W0

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

Endemicoccurs (regularly, as a native taxon) in multiple nations

KingdomPlantae

PhylumAnthophyta

ClassDicotyledoneae

OrderAsterales

FamilyAsteraceae

GenusErigeron

Other Common Names

prairie fleabane (EN) Prairie Fleabane (EN) Rough Fleabane (EN) Vergerette rude (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.

Taxonomic Comments

FNA (vol. 20, 2006) recognizes four distinct varieties (septentrionalis, strigosus, dolomiticola, and calcicola). FNA includes E. strigosus var. beyrichii in E. strigosus var. strigosus, while Kartesz (1994) treats them as distinct. Varieties dolomiticola and calcicola appear to derive from E. strigosus var. strigosus. This record is for the treatment that includes those varieties. Poindexter et al. in Weakley et al. (2017) distinguish those varieties as distinct species (E. dolomiticola and E. calcicola, which was later replaced by the unique combination E. allisonii).

Conservation Status

Rank Method Rank calculation - Biotics v2

Review Date2025-05-08

Change Date1984-04-24

Edition Date2025-05-08

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 Reasons

Erigeron strigosus is an annual, biennial, or perennial forb occurring in glades, woodlands, open, disturbed sites, and roadsides throughout most of North America and as an introduced species in Europe and Asia. There are over 1,000 estimated occurrences of this species in North America, which are potentially threatened by development, rights-of-way construction and maintenance, invasive species, succession, and other threats in some places. Little is known about threats or trends, but with a large range extent and high number of occurrences, Erigeron strigosus is considered secure.

Range Extent Comments

Erigeron strigosus occurs throughout most of North America, from British Columbia east to Newfoundland and Labrador south to California and Florida (though not in Nevada, Utah, or Arizona) (FNA 2006). It has also been introduced to Europe and Asia (POWO 2025). The native range extent was estimated using herbarium specimens, NatureServe Network occurrence data, photo-based observations documented between 1994 and 2025 and published distribution maps (GBIF 2025, iNaturalist 2025, NatureServe 2025, POWO 2025, RARECAT 2025, SEINet 2025). See individual entries for distribution details about the four varieties.

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 more than 1,000 occurrences within the native range of the species (GBIF 2025, iNaturalist 2025, NatureServe 2025, RARECAT 2025, SEINet 2025).

Threat Impact Comments

Erigeron strigosus is potentially threatened by development, rights-of-way construction and maintenance, invasive species, succession, and other threats in some places. However, they are considered negligible given the broad range and large number of occurrences of the species and its somewhat flexible and abundant habitat, as well as no obvious intrinsic vulnerabilities.

Ecology & Habitat

Habitat

Erigeron strigosus occurs in open, disturbed sites, along woodland edges, roadsides, limestone and dolomite glades from 0-1500 m in elevation (FNA 2006).

Terrestrial Habitats

Forest/WoodlandForest Edge

Other Nations (2)

United StatesN5

Province	Rank	Native
South Carolina	SNR	Yes
New York	S5	Yes
Nebraska	SNR	Yes
New Mexico	SNR	Yes
Mississippi	SNR	Yes
District of Columbia	S5	Yes
Maine	SNR	Yes
Ohio	SNR	Yes
Minnesota	SNR	Yes
Illinois	SNR	Yes
Massachusetts	SNR	Yes
South Dakota	SNR	Yes
Rhode Island	SNR	Yes
Louisiana	SNR	Yes
Georgia	S5	Yes
Pennsylvania	S5	Yes
Indiana	SNR	Yes
Tennessee	SNR	Yes
Florida	SNR	Yes
West Virginia	S5	Yes
New Hampshire	SNR	Yes
Kansas	SNR	Yes
Vermont	S5	Yes
North Carolina	S5	Yes
Texas	S3	Yes
Washington	SNR	Yes
Maryland	SNR	Yes
Oklahoma	SNR	Yes
Connecticut	SNR	Yes
Wisconsin	SNR	Yes
Virginia	S5	Yes
Montana	S4	Yes
New Jersey	SNR	Yes
Idaho	SNR	Yes
California	SNR	Yes
Iowa	S5	Yes
Oregon	SU	Yes
Alabama	SNR	Yes
Kentucky	SNR	Yes
Colorado	S3	Yes
Wyoming	S3	Yes
North Dakota	SNR	Yes
Missouri	SNR	Yes
Delaware	S5	Yes
Michigan	SNR	Yes
Arkansas	SNR	Yes

CanadaN5

Province	Rank	Native
British Columbia	S5	Yes
Saskatchewan	S3	Yes
Nova Scotia	S5	Yes
Alberta	S3	Yes
Ontario	S5	Yes
New Brunswick	S5	Yes
Prince Edward Island	S5	Yes
Island of Newfoundland	SNA	No
Manitoba	S4	Yes
Quebec	SNR	Yes

Threat Assessments

Threat	Scope	Severity	Timing
Unknown/undetermined	—	—	—

Plant Characteristics

DurationANNUAL, BIENNIAL, PERENNIAL

Economic Value (Genus)No

Roadless Areas (19)

Arkansas (2)

Area	Forest	Acres
Dismal Creek	Ozark-St. Francis National Forest	9,160
Pedestal Rocks	Ozark-St. Francis National Forest	21,957

Georgia (1)

Area	Forest	Acres
Pink Knob	Chattahoochee National Forest	12,127

Minnesota (2)

Area	Forest	Acres
Cabin Creek	Superior National Forest	6,071
Kawishiwi Lake To Sawbill	Superior National Forest	15,305

New Hampshire (2)

Area	Forest	Acres
Mt. Wolf - Gordon Pond	White Mountain National Forest	11,846
Sandwich Range	White Mountain National Forest	16,797

North Carolina (4)

Area	Forest	Acres
Bearwallow	Pisgah National Forest	4,113
Craggy Mountain	Pisgah National Forest	2,657
Lost Cove	Pisgah National Forest	5,944
Tusquitee Bald	Nantahala National Forest	13,670

North Dakota (1)

Area	Forest	Acres
Ponderosa Pine	Dakota Prairie Grasslands	7,471

Vermont (2)

Area	Forest	Acres
Lye Brook Addition 09085	Green Mountain and Finger Lakes National Forests	1,111
Woodford 09086	Green Mountain and Finger Lakes National Forests	2,456

Virginia (2)

Area	Forest	Acres
Adams Peak	George Washington National Forest	7,135
Little River	George Washington National Forest	27,292

West Virginia (3)

Area	Forest	Acres
Cranberry Addition	Monongahela National Forest	11,123
Dry River (WV)	George Washington National Forest	7,331
Falls Of Hills Creek	Monongahela National Forest	6,925

References (12)

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.
Global Biodiversity Information Facility (GBIF). 2025. Global Biodiversity Information Facility (GBIF) data portal. Online. Available: https://www.gbif.org/ (accessed 2025).
iNaturalist. 2025. Online. Available: https://www.inaturalist.org (accessed 2025).
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.
NatureServe. 2025. NatureServe Network Biodiversity Location Data. NatureServe, Arlington, Virginia.
NatureServe's Rapid Analysis of Rarity and Endangerment Conservation Assessment Tool (RARECAT). 2024. Version: 1.1.1 (released Oct 01, 2024).
Noyes, R.D. 2006. Intraspecific nuclear ribosomal DNA divergence and reticulation in sexual diploid <i>Erigeron strigosus</i> (Asteraceae). American Journal of Botany 93(3): 470-479.
Plants of the World Online (POWO). 2025. Plants of the World Online. Facilitated by the Royal Botanic Gardens, Kew. Online. Available: https://powo.science.kew.org/ (accessed 2025).
Poindexter, D.B., B.R. Keener, and R.D. Noyes. 2017. Elevation of two sexual diploids in the <i>Erigeron strigosus</i> complex to species rank. in: Weakley, A.S., D.B. Poindexter, R.J. LeBlond, B.A. Sorrie, C.H. Karlsson, P.J. Williams, E.L. Bridges, S.L. Orzell, B.R. Keener, A. Weeks, R.D. Noyes, M. Flores-Cruz, J.T. Diggs, G.D. Gann, and A.J. Floden. 2017. New combinations, rank changes, and nomenclatural and taxonomic comments in the vascular flora of the southeastern United States. II. Journal of the Botanical Research Institute of Texas 11: 291-325.
Southwest Environmental Information Network (SEINet). 2025. Collections Databases. Online. Available: https://swbiodiversity.org/seinet/collections/index.php (accessed 2025).
Weakley, A., B. Sorrie, R. LeBlond, D. B. Poindexter, A. Floden, E. Schiling, A. Franck, and J. Kees. 2018. New combinations, rank chages and nomenclatural and taxonomic comments in the vascular flora of the southeastern United States. IV. Journal of the Botanical Research Institute of Texas (JBRIT), 12(2): 461-480.
Weakley, A.S., D.B. Poindexter, R.J. LeBlond, B.A. Sorrie, C.H. Karsson, P.J. Williams, E.I Bridges, S.L. Orzell, B.R. Keener, A. Weekes, R.D. Noyes, M. Florez-Cruz, J.T. Diggs, G.D. Dan, and A.J. Floden. 2017. New combinations, rank changes, and nomenclatural and taxonomic comments in the vascular flora of the southeastern United States. Journal of the Botanical Research Institute of Texas 11(2): 291-325.

Erigeron strigosus

Habitat

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