Ammannia coccineaRottb.

valley redstem

WFO wfo-0000530955 Accepted WFO 2026-06 8 photographs CC BY

Plate 1 figs. a–h · 8 separate observations

Ammannia coccinea, photographed by Jacy Chen
fig. a Jacy Chen, CC BY 4.0 / 2021-11-10 / obs. 178115661
Ammannia coccinea, photographed by Jay Pruett
fig. b Jay Pruett, CC BY 4.0 / obs. 155292106
Ammannia coccinea, photographed by Dan Johnson
fig. c Dan Johnson, CC BY 4.0 / obs. 101870604
Ammannia coccinea, photographed by Haley Daniels
fig. d Haley Daniels, CC BY 4.0 / obs. 101825213
Ammannia coccinea, photographed by saltyhiker
fig. e saltyhiker, CC BY 4.0 / obs. 101130820
Ammannia coccinea, photographed by Dan Johnson
fig. f Dan Johnson, CC BY 4.0 / obs. 100288985
Ammannia coccinea, photographed by saltyhiker
fig. g saltyhiker, CC BY 4.0 / obs. 97018806
Ammannia coccinea, photographed by Thomas Koffel
fig. h Thomas Koffel, CC BY 4.0 / obs. 89158771

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 63 botanical countries

Regions where Ammannia coccinea is native: Iran, Transcaucasus, Northern Territory, Queensland, Alabama, Arizona, Arkansas, British Columbia, California, Colorado, Delaware, District of Columbia, Florida, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maryland, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Minnesota, Mississippi, Missouri, Nebraska, New Jersey, New Mexico, North Carolina, North Dakota, Ohio, Oklahoma, Pennsylvania, South Carolina, South Dakota, Tennessee, Texas, Virginia, West Virginia, Aruba, Bahamas, Cayman Is., Colombia, Costa Rica, Cuba, Dominican Republic, Ecuador, Haiti, Honduras, Jamaica, Leeward Is., Netherlands Antilles, Nicaragua, Panamá, Puerto Rico, Turks-Caicos Is., Venezuela, Windward Is. IranTranscaucasusNorthern TerritoryQueenslandAlabamaArizonaArkansasBritish ColumbiaCaliforniaColoradoFloridaGeorgiaIllinoisIndianaIowaKansasKentuckyLouisianaMarylandMexico CentralMexico GulfMexico NortheastMexico NorthwestMexico SoutheastMexico SouthwestMinnesotaMississippiMissouriNebraskaNew JerseyNew MexicoNorth CarolinaNorth DakotaOhioOklahomaPennsylvaniaSouth CarolinaSouth DakotaTennesseeTexasVirginiaWest VirginiaColombiaCosta RicaCubaDominican RepublicEcuadorHaitiHondurasJamaicaNicaraguaPanamáPuerto RicoVenezuela DelawareDistrict of ColumbiaArubaBahamasCayman Is.Leeward Is.Netherlands AntillesTurks-Caicos Is.Windward Is.
Native distribution of Ammannia coccinea, 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
Arizona ARI
Arkansas ARK
British Columbia BRC
California CAL
Colorado COL
Delaware DEL
District of Columbia WDC
Florida FLA
Georgia GEO
Illinois ILL
Indiana INI
Iowa IOW
Kansas KAN
Kentucky KTY
Louisiana LOU
Maryland MRY
Mexico Central MXC
Mexico Gulf MXG
Mexico Northeast MXE
Mexico Northwest MXN
Mexico Southeast MXT
Mexico Southwest MXS
Minnesota MIN
Mississippi MSI
Missouri MSO
Nebraska NEB
New Jersey NWJ
New Mexico NWM
North Carolina NCA
North Dakota NDA
Ohio OHI
Oklahoma OKL
Pennsylvania PEN
South Carolina SCA
South Dakota SDA
Tennessee TEN
Texas TEX
Virginia VRG
West Virginia WVA
Aruba ARU SOUTHERN AMERICA
Bahamas BAH
Cayman Is. CAY
Colombia CLM
Costa Rica COS
Cuba CUB
Dominican Republic DOM
Ecuador ECU
Haiti HAI
Honduras HON
Jamaica JAM
Leeward Is. LEE
Netherlands Antilles NLA
Nicaragua NIC
Panamá PAN
Puerto Rico PUE
Turks-Caicos Is. TCI
Venezuela VEN
Windward Is. WIN
Iran IRN ASIA-TEMPERATE
Transcaucasus TCS
Northern Territory NTA AUSTRALASIA
Queensland QLD

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 222 examined

Peak flowering in Jun. Each bar is the share of Ammannia coccinea 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 222 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 6 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 18 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.

  • Ammannia catholica var. philippensis Cham. & Schltdl.
  • Ammannia coccinea subsp. longifolia (Koehne) Koehne
  • Ammannia coccinea subsp. purpurea (Lam.) Koehne
  • Ammannia latifolia Walp.
  • Ammannia latifolia var. octandra A.Gray
  • Ammannia longifolia Raf.
  • Ammannia octandra Cham. & Schltdl.
  • Ammannia pedunculata Rusby
  • Ammannia pubiflora (Koehne) Sosn.
  • Ammannia purpurea Lam.
  • Ammannia ramosior L.
  • Ammannia sagittata var. angustifolia A.Rich.
  • Ammannia sanguinolenta Sw.
  • Ammannia sanguinolenta subsp. longifolia Koehne
  • Ammannia sanguinolenta subsp. purpurea Koehne
  • Ammannia stylosa Fisch. & C.A.Mey.
  • Ammannia teres Raf.
  • Ammannia texana Scheele

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.