Corydalis flavula(Raf.) DC.

yellow fumewort

WFO wfo-0000622336 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Corydalis flavula, photographed by Ryan Sorrells
fig. a Ryan Sorrells, CC BY 4.0 / 2022-04-25 / obs. 191024290
Corydalis flavula, photographed by jrcagle
fig. b jrcagle, CC BY 4.0 / obs. 190212321
Corydalis flavula, photographed by mefisher
fig. c mefisher, CC0 1.0 / obs. 189885629
Corydalis flavula, photographed by Alina Martin
fig. d Alina Martin, CC BY 4.0 / obs. 190192200
Corydalis flavula, photographed by Yann Kemper
fig. e Yann Kemper, CC0 1.0 / obs. 187809551
Corydalis flavula, photographed by Yann Kemper
fig. f Yann Kemper, CC0 1.0 / obs. 187809667
Corydalis flavula, photographed by mefisher
fig. g mefisher, CC0 1.0 / obs. 186939758
Corydalis flavula, photographed by harrier
fig. h harrier, CC BY 4.0 / obs. 186992115

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 27 botanical countries

Regions where Corydalis flavula is native: Alabama, Arkansas, Delaware, District of Columbia, Florida, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maryland, Michigan, Mississippi, Missouri, Nebraska, New Jersey, New York, North Carolina, Ohio, Oklahoma, Ontario, Pennsylvania, South Carolina, Tennessee, Virginia, West Virginia AlabamaArkansasFloridaIllinoisIndianaIowaKansasKentuckyLouisianaMarylandMichiganMississippiMissouriNebraskaNew JerseyNew YorkNorth CarolinaOhioOklahomaOntarioPennsylvaniaSouth CarolinaTennesseeVirginiaWest Virginia DelawareDistrict of Columbia
Native distribution of Corydalis flavula, 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
Arkansas ARK
Delaware DEL
District of Columbia WDC
Florida FLA
Illinois ILL
Indiana INI
Iowa IOW
Kansas KAN
Kentucky KTY
Louisiana LOU
Maryland MRY
Michigan MIC
Mississippi MSI
Missouri MSO
Nebraska NEB
New Jersey NWJ
New York NWY
North Carolina NCA
Ohio OHI
Oklahoma OKL
Ontario ONT
Pennsylvania PEN
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.

Flowering 820 in flower of 901 examined

Peak flowering in Apr. Each bar is the share of Corydalis flavula 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. 820 of 901 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 7 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 5 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.

  • Capnodes flavulum Kuntze
  • Capnoides flavula (Raf.) Kuntze
  • Corydalis aurea var. flavula (Raf.) Alph.Wood
  • Corydalis flavidula Chapm.
  • Neckeria flavula (Raf.) Millsp.

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.