Eurybia radula(Aiton) G.L.Nesom

low rough aster

WFO wfo-0000128608 Accepted WFO 2026-06 8 photographs CC0 / CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Eurybia radula, photographed by Matt Pelikan
fig. a Matt Pelikan, CC BY 4.0 / 2021-08-08 / obs. 149494749
Eurybia radula, photographed by Mike Zifkin
fig. b Mike Zifkin, CC BY 4.0 / obs. 97169686
Eurybia radula, photographed by agbelliveau
fig. c agbelliveau, CC0 1.0 / obs. 90256719
Eurybia radula, photographed by Katja Schulz
fig. d Katja Schulz, CC BY 4.0 / obs. 11603432
Eurybia radula, photographed by bobkennedy
fig. e bobkennedy, CC BY-SA 4.0 / obs. 90378367
Eurybia radula, photographed by Todd Boland
fig. f Todd Boland, CC BY 4.0 / obs. 22528145
Eurybia radula, photographed by Ryan Hodnett
fig. g Ryan Hodnett, CC BY-SA 4.0 / obs. 56185932
Eurybia radula, photographed by Mary E. Macaulay, P.Eng.
fig. h Mary E. Macaulay, P.Eng., CC BY 4.0 / obs. 154399033

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Native range 22 botanical countries

Regions where Eurybia radula is native: Connecticut, Delaware, District of Columbia, Kentucky, Labrador, Maine, Maryland, Massachusetts, New Brunswick, New Hampshire, New Jersey, New York, Newfoundland, Nova Scotia, Ontario, Pennsylvania, Prince Edward I., Québec, Rhode I., Vermont, Virginia, West Virginia ConnecticutKentuckyLabradorMaineMarylandMassachusettsNew BrunswickNew HampshireNew JerseyNew YorkNewfoundlandNova ScotiaOntarioPennsylvaniaPrince Edward I.QuébecVermontVirginiaWest Virginia DelawareDistrict of ColumbiaRhode I.
Native distribution of Eurybia radula, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows. Regions too small to draw at this scale are marked with a dot.
RegionTDWG codeContinent
Connecticut CNT NORTHERN AMERICA
Delaware DEL
District of Columbia WDC
Kentucky KTY
Labrador LAB
Maine MAI
Maryland MRY
Massachusetts MAS
New Brunswick NBR
New Hampshire NWH
New Jersey NWJ
New York NWY
Newfoundland NFL
Nova Scotia NSC
Ontario ONT
Pennsylvania PEN
Prince Edward I. PEI
Québec QUE
Rhode I. RHO
Vermont VER
Virginia VRG
West Virginia WVA

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Flowering 148 in flower of 154 examined

Peak flowering in Sep. Each bar is the share of Eurybia radula observations in which someone actually recorded the reproductive state and found the plant in flower, not the raw number of flowering records. That distinction matters: people observe plants far more in spring than in winter, so a bare count of flowering records partly measures when people go outside. Dividing by the number examined removes that. 148 of 154 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 8 months have fewer than 5 examined observations, so no proportion is drawn for them. This is still a global aggregate and not a forecast for your garden: the same species flowers on different dates in different hemispheres. Where a species has fewer than 30 flowering records we do not draw this chart at all. Computed from 10.15468/dl.cgje2x.

Also published as 6 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Aster biflorus Michx.
  • Aster nudiflorus Nutt.
  • Aster radula Aiton
  • Aster radula f. strictus (A.Gray) B.Boivin
  • Aster radula var. radula
  • Aster radula var. strictus A.Gray

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
  3. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
  4. Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.