Utricularia macrorhizaLeconte

Common bladderwortcommon bladderwort

WFO wfo-0000415612 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Utricularia macrorhiza, photographed by Christian Back
fig. a Christian Back, CC BY 4.0 / 2021-08-25 / obs. 158016737
Utricularia macrorhiza, photographed by Pierre Cartier
fig. b Pierre Cartier, CC0 1.0 / obs. 150675593
Utricularia macrorhiza, photographed by Norma Malinowski
fig. c Norma Malinowski, CC BY 4.0 / obs. 149649178
Utricularia macrorhiza, photographed by James Telford
fig. d James Telford, CC BY 4.0 / obs. 146393197
Utricularia macrorhiza, photographed by Jason Grant
fig. e Jason Grant, CC BY 4.0 / obs. 144854846
Utricularia macrorhiza, photographed by Jon Ferreira
fig. f Jon Ferreira, CC0 1.0 / obs. 144266378
Utricularia macrorhiza, photographed by Erik Schiff
fig. g Erik Schiff, CC0 1.0 / obs. 144391893
Utricularia macrorhiza, photographed by Derek
fig. h Derek, CC BY 4.0 / obs. 142790617

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 87 botanical countries

Regions where Utricularia macrorhiza is native: Altay, Amur, China North-Central, China South-Central, China Southeast, Inner Mongolia, Japan, Kamchatka, Khabarovsk, Krasnoyarsk, Kuril Is., Magadan, Manchuria, Mongolia, Primorye, Qinghai, Sakhalin, Xinjiang, Yakutiya, Alabama, Alaska, Alberta, Arizona, Arkansas, British Columbia, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Labrador, Louisiana, Maine, Manitoba, Maryland, Massachusetts, Mexico Central, Mexico Northeast, Mexico Northwest, Mexico Southwest, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Brunswick, New Hampshire, New Jersey, New Mexico, New York, Newfoundland, North Carolina, North Dakota, Northwest Territories, Nova Scotia, Nunavut, Ohio, Oklahoma, Ontario, Oregon, Pennsylvania, Prince Edward I., Québec, Rhode I., Saskatchewan, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming, Yukon AltayAmurChina North-CentralChina South-CentralChina SoutheastInner MongoliaJapanKamchatkaKhabarovskKrasnoyarskMagadanManchuriaMongoliaPrimoryeQinghaiSakhalinXinjiangYakutiyaAlabamaAlaskaAlbertaArizonaArkansasBritish ColumbiaCaliforniaColoradoConnecticutFloridaGeorgiaIdahoIllinoisIndianaIowaKansasKentuckyLabradorLouisianaMaineManitobaMarylandMassachusettsMexico CentralMexico NortheastMexico NorthwestMexico SouthwestMichiganMinnesotaMississippiMissouriMontanaNebraskaNevadaNew BrunswickNew HampshireNew JerseyNew MexicoNew YorkNewfoundlandNorth CarolinaNorth DakotaNorthwest TerritoriesNova ScotiaNunavutOhioOklahomaOntarioOregonPennsylvaniaPrince Edward I.QuébecSaskatchewanSouth CarolinaSouth DakotaTennesseeTexasUtahVermontVirginiaWashingtonWest VirginiaWisconsinWyomingYukon DelawareDistrict of ColumbiaRhode I.
Native distribution of Utricularia macrorhiza, 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
Alaska ASK
Alberta ABT
Arizona ARI
Arkansas ARK
British Columbia BRC
California CAL
Colorado COL
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
Louisiana LOU
Maine MAI
Manitoba MAN
Maryland MRY
Massachusetts MAS
Mexico Central MXC
Mexico Northeast MXE
Mexico Northwest MXN
Mexico Southwest MXS
Michigan MIC
Minnesota MIN
Mississippi MSI
Missouri MSO
Montana MNT
Nebraska NEB
Nevada NEV
New Brunswick NBR
New Hampshire NWH
New Jersey NWJ
New Mexico NWM
New York NWY
Newfoundland NFL
North Carolina NCA
North Dakota NDA
Northwest Territories NWT
Nova Scotia NSC
Nunavut NUN
Ohio OHI
Oklahoma OKL
Ontario ONT
Oregon ORE
Pennsylvania PEN
Prince Edward I. PEI
Québec QUE
Rhode I. RHO
Saskatchewan SAS
South Carolina SCA
South Dakota SDA
Tennessee TEN
Texas TEX
Utah UTA
Vermont VER
Virginia VRG
Washington WAS
West Virginia WVA
Wisconsin WIS
Wyoming WYO
Yukon YUK
Altay ALT ASIA-TEMPERATE
Amur AMU
China North-Central CHN
China South-Central CHC
China Southeast CHS
Inner Mongolia CHI
Japan JAP
Kamchatka KAM
Khabarovsk KHA
Krasnoyarsk KRA
Kuril Is. KUR
Magadan MAG
Manchuria CHM
Mongolia MON
Primorye PRM
Qinghai CHQ
Sakhalin SAK
Xinjiang CHX
Yakutiya YAK

Not drawn on the map: Kuril Is.. We hold no public-domain boundary for this region, so it is listed rather than guessed at.

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 1,086 in flower of 1,141 examined

Peak flowering in Jul. Each bar is the share of Utricularia macrorhiza 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. 1,086 of 1,141 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 9 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.

  • Lentibularia vulgaris var. americana (A.Gray) Nieuwl. & Lunell
  • Megopiza macrorhiza (Leconte) Raf.
  • Megozipa macrorhiza (J.Le Conte) Raf.
  • Utricularia grandiflora M.Martens
  • Utricularia intermedia var. robbinsii Alph.Wood
  • Utricularia robbinsii (Alph.Wood) Alph.Wood
  • Utricularia siakujiensis S.Nakaj.
  • Utricularia vulgaris subsp. macrorhiza (Leconte) R.T.Clausen
  • Utricularia vulgaris var. americana 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.