Cicuta bulbiferaL.

bulb-bearing water-hemlockbulblet-bearing water hemlockbulblet-bearing water-hemlockbulbous water-hemlock

WFO wfo-0000604466 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Cicuta bulbifera, photographed by Quinten Wiegersma
fig. a Quinten Wiegersma, CC BY 4.0 / 2021-09-15 / obs. 157895538
Cicuta bulbifera, photographed by Nic Tippery
fig. b Nic Tippery, CC BY 4.0 / obs. 154536738
Cicuta bulbifera, photographed by danbanks
fig. c danbanks, CC0 1.0 / obs. 152231343
Cicuta bulbifera, photographed by Jacob Friend
fig. d Jacob Friend, CC0 1.0 / obs. 153197447
Cicuta bulbifera, photographed by Ian Whyte
fig. e Ian Whyte, CC0 1.0 / obs. 172198398
Cicuta bulbifera, photographed by Ian Whyte
fig. f Ian Whyte, CC0 1.0 / obs. 172198417
Cicuta bulbifera, photographed by Ian Whyte
fig. g Ian Whyte, CC0 1.0 / obs. 172198382
Cicuta bulbifera, photographed by Benoit Renaud
fig. h Benoit Renaud, CC BY 4.0 / obs. 150359302

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 50 botanical countries

Regions where Cicuta bulbifera is native: Alaska, Alberta, British Columbia, Connecticut, Delaware, District of Columbia, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Labrador, Maine, Manitoba, Maryland, Massachusetts, Michigan, Minnesota, Montana, Nebraska, New Brunswick, New Hampshire, New Jersey, New York, Newfoundland, North Carolina, North Dakota, Northwest Territories, Nova Scotia, Nunavut, Ohio, Ontario, Oregon, Pennsylvania, Prince Edward I., Québec, Rhode I., Saskatchewan, South Carolina, South Dakota, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming, Yukon AlaskaAlbertaBritish ColumbiaConnecticutFloridaGeorgiaIdahoIllinoisIndianaIowaKansasKentuckyLabradorMaineManitobaMarylandMassachusettsMichiganMinnesotaMontanaNebraskaNew BrunswickNew HampshireNew JerseyNew YorkNewfoundlandNorth CarolinaNorth DakotaNorthwest TerritoriesNova ScotiaNunavutOhioOntarioOregonPennsylvaniaPrince Edward I.QuébecSaskatchewanSouth CarolinaSouth DakotaVermontVirginiaWashingtonWest VirginiaWisconsinWyomingYukon DelawareDistrict of ColumbiaRhode I.
Native distribution of Cicuta bulbifera, 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
Alaska ASK NORTHERN AMERICA
Alberta ABT
British Columbia BRC
Connecticut CNT
Delaware DEL
District of Columbia WDC
Florida FLA
Georgia GEO
Idaho IDA
Illinois ILL
Indiana INI
Iowa IOW
Kansas KAN
Kentucky KTY
Labrador LAB
Maine MAI
Manitoba MAN
Maryland MRY
Massachusetts MAS
Michigan MIC
Minnesota MIN
Montana MNT
Nebraska NEB
New Brunswick NBR
New Hampshire NWH
New Jersey NWJ
New York NWY
Newfoundland NFL
North Carolina NCA
North Dakota NDA
Northwest Territories NWT
Nova Scotia NSC
Nunavut NUN
Ohio OHI
Ontario ONT
Oregon ORE
Pennsylvania PEN
Prince Edward I. PEI
Québec QUE
Rhode I. RHO
Saskatchewan SAS
South Carolina SCA
South Dakota SDA
Vermont VER
Virginia VRG
Washington WAS
West Virginia WVA
Wisconsin WIS
Wyoming WYO
Yukon YUK

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 156 in flower of 215 examined

Peak flowering in Aug. Each bar is the share of Cicuta bulbifera 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. 156 of 215 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 2 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.

  • Cicutaria bulbifera Lam.
  • Keraskomion bulbiferum Raf.

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.