Ribes americanumMill.

American black currantRoxborough currant

WFO wfo-0001135378 Accepted WFO 2026-06 8 photographs CC0 / CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Ribes americanum, photographed by Carol Ann Vermeer
fig. a Carol Ann Vermeer, CC BY 4.0 / 2022-06-09 / obs. 204857751
Ribes americanum, photographed by Howard Williams
fig. b Howard Williams, CC BY-SA 4.0 / obs. 200078865
Ribes americanum, photographed by Ian Whyte
fig. c Ian Whyte, CC0 1.0 / obs. 201077059
Ribes americanum, photographed by Susan Berry
fig. d Susan Berry, CC0 1.0 / obs. 202513989
Ribes americanum, photographed by Henry "Nick" Robertson
fig. e Henry "Nick" Robertson, CC BY-SA 4.0 / obs. 198993528
Ribes americanum, photographed by Marilynn Miller
fig. f Marilynn Miller, CC BY 4.0 / obs. 198517882
Ribes americanum, photographed by Renato Robert
fig. g Renato Robert, CC BY 4.0 / obs. 198001313
Ribes americanum, photographed by Loopy30
fig. h Loopy30, CC BY-SA 4.0 / obs. 197646053

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 39 botanical countries

Regions where Ribes americanum is native: Alberta, Colorado, Connecticut, Delaware, District of Columbia, Illinois, Indiana, Iowa, Kentucky, Maine, Manitoba, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Montana, Nebraska, New Brunswick, New Hampshire, New Jersey, New Mexico, New York, North Dakota, Nova Scotia, Ohio, Ontario, Pennsylvania, Prince Edward I., Québec, Rhode I., Saskatchewan, South Dakota, Tennessee, Vermont, Virginia, West Virginia, Wisconsin, Wyoming AlbertaColoradoConnecticutIllinoisIndianaIowaKentuckyMaineManitobaMarylandMassachusettsMichiganMinnesotaMissouriMontanaNebraskaNew BrunswickNew HampshireNew JerseyNew MexicoNew YorkNorth DakotaNova ScotiaOhioOntarioPennsylvaniaPrince Edward I.QuébecSaskatchewanSouth DakotaTennesseeVermontVirginiaWest VirginiaWisconsinWyoming DelawareDistrict of ColumbiaRhode I.
Native distribution of Ribes americanum, 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
Alberta ABT NORTHERN AMERICA
Colorado COL
Connecticut CNT
Delaware DEL
District of Columbia WDC
Illinois ILL
Indiana INI
Iowa IOW
Kentucky KTY
Maine MAI
Manitoba MAN
Maryland MRY
Massachusetts MAS
Michigan MIC
Minnesota MIN
Missouri MSO
Montana MNT
Nebraska NEB
New Brunswick NBR
New Hampshire NWH
New Jersey NWJ
New Mexico NWM
New York NWY
North Dakota NDA
Nova Scotia NSC
Ohio OHI
Ontario ONT
Pennsylvania PEN
Prince Edward I. PEI
Québec QUE
Rhode I. RHO
Saskatchewan SAS
South Dakota SDA
Tennessee TEN
Vermont VER
Virginia VRG
West Virginia WVA
Wisconsin WIS
Wyoming WYO

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 626 in flower of 748 examined

Peak flowering in May. Each bar is the share of Ribes americanum 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. 626 of 748 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 19 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.

  • Coreosma americana (Mill.) Nieuwl.
  • Coreosma americana var. mesochora Nieuwl.
  • Coreosma florida (L'Hér.) Spach
  • Ribes americanum f. mesochorum (Nieuwl.) Deam
  • Ribes americanum f. pauciglandulosum Fassett
  • Ribes americanum var. mesochorum (Nieuwl.) Peattie
  • Ribes billenei Medik.
  • Ribes campanulatum Moench
  • Ribes dillenii Medik.
  • Ribes floridum L'Hér.
  • Ribes floridum var. grandiflorum Loudon
  • Ribes heterotrichum K.Koch
  • Ribes intermedium Tausch
  • Ribes nigrum var. pennyslvanicum Marshall
  • Ribes pensylvanicum Lam.
  • Ribes recurvatum Michx.
  • Ribes schmidtianum Tausch
  • Ribesium campanulatum (Moench) Medik.
  • Ribesium dillenii (Medik.) Medik.

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.