Vernonia noveboracensis(L.) Michx.

New York ironweed

WFO wfo-0000005844 Accepted WFO 2026-06 8 photographs CC0 / CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Vernonia noveboracensis, photographed by Violet T.
fig. a Violet T., CC BY 4.0 / 2022-01-12 / obs. 175941026
Vernonia noveboracensis, photographed by Violet T.
fig. b Violet T., CC BY 4.0 / obs. 175650594
Vernonia noveboracensis, photographed by Daniel Patterson
fig. c Daniel Patterson, CC BY 4.0 / obs. 158444970
Vernonia noveboracensis, photographed by er-birds
fig. d er-birds, CC BY 4.0 / obs. 154336510
Vernonia noveboracensis, photographed by Henry Van T. Cotter
fig. e Henry Van T. Cotter, CC BY 4.0 / obs. 152601730
Vernonia noveboracensis, photographed by Brian Finzel
fig. f Brian Finzel, CC BY-SA 4.0 / obs. 174597692
Vernonia noveboracensis, photographed by Randy A Nonenmacher
fig. g Randy A Nonenmacher, CC BY 4.0 / obs. 149706176
Vernonia noveboracensis, photographed by mefisher
fig. h mefisher, CC0 1.0 / obs. 149064989

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 17 botanical countries

Regions where Vernonia noveboracensis is native: Alabama, Connecticut, Delaware, District of Columbia, Florida, Georgia, Maryland, Massachusetts, New Jersey, New York, North Carolina, Pennsylvania, Rhode I., South Carolina, Tennessee, Virginia, West Virginia AlabamaConnecticutFloridaGeorgiaMarylandMassachusettsNew JerseyNew YorkNorth CarolinaPennsylvaniaSouth CarolinaTennesseeVirginiaWest Virginia DelawareDistrict of ColumbiaRhode I.
Native distribution of Vernonia noveboracensis, 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
Alabama ALA NORTHERN AMERICA
Connecticut CNT
Delaware DEL
District of Columbia WDC
Florida FLA
Georgia GEO
Maryland MRY
Massachusetts MAS
New Jersey NWJ
New York NWY
North Carolina NCA
Pennsylvania PEN
Rhode I. RHO
South Carolina SCA
Tennessee TEN
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.

Also published as 21 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 giganteus Hort. ex Vilm.
  • Behen noveboracense (L.) Hill
  • Behen praealtum Hill
  • Cacalia noveboracensis (L.) Kuntze
  • Chrysocoma noveboracensis Desf.
  • Chrysocoma tomentosa Walter
  • Serratula caroliniana Mill.
  • Serratula noveboracensis L.
  • Serratula praealta L.
  • Vernonia gigantea var. praealta Daniels
  • Vernonia harperi Gleason
  • Vernonia noveboracensis (L.) Willd.
  • Vernonia noveboracensis f. noveboracensis
  • Vernonia noveboracensis var. noveboracensis
  • Vernonia noveboracensis var. praealta Alph.Wood
  • Vernonia noveboracensis var. tomentosa (Walt.) Port. & Elliot
  • Vernonia praealta Michx.
  • Vernonia praealta var. praealta
  • Vernonia rugeliana Shuttlew. ex A.Gray
  • Vernonia tomentosa (Walt.) Elliot
  • Vernonia tomentosa Elliott

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.