Dysphania ambrosioides(L.) Mosyakin & Clemants

Mexican teagoosefootlamb's quarterspigweedwormseed

WFO wfo-0000658867 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Dysphania ambrosioides, photographed by saltyhiker
fig. a saltyhiker, CC BY 4.0 / 2022-06-11 / obs. 205230137
Dysphania ambrosioides, photographed by 雲一百香果
fig. b 雲一百香果, CC BY 4.0 / obs. 188663001
Dysphania ambrosioides, photographed by Joe Dillon
fig. c Joe Dillon, CC BY 4.0 / obs. 187668706
Dysphania ambrosioides, photographed by Tim Kirsten
fig. d Tim Kirsten, CC0 1.0 / obs. 185042945
Dysphania ambrosioides, photographed by Josiah Londerée
fig. e Josiah Londerée, CC BY 4.0 / obs. 182314234
Dysphania ambrosioides, photographed by 葉子
fig. f 葉子, CC0 1.0 / obs. 189387073
Dysphania ambrosioides, photographed by cstobie
fig. g cstobie, CC BY 4.0 / obs. 178212806
Dysphania ambrosioides, photographed by Miles Russell
fig. h Miles Russell, CC0 1.0 / obs. 170891679

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 42 botanical countries

Regions where Dysphania ambrosioides is native: Tristan da Cunha, Arkansas, Florida, Georgia, Louisiana, Maryland, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Southeast, Mexico Southwest, Mississippi, North Carolina, Oklahoma, South Carolina, Texas, Virginia, Argentina Northeast, Argentina Northwest, Argentina South, Aruba, Belize, Bolivia, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Chile Central, Chile North, Chile South, Colombia, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, Panamá, Paraguay, Peru, Uruguay, Venezuela ArkansasFloridaGeorgiaLouisianaMarylandMexico CentralMexico GulfMexico NortheastMexico SoutheastMexico SouthwestMississippiNorth CarolinaOklahomaSouth CarolinaTexasVirginiaArgentina NortheastArgentina NorthwestArgentina SouthBelizeBoliviaBrazil NorthBrazil NortheastBrazil SouthBrazil SoutheastBrazil West-CentralChile CentralChile NorthChile SouthColombiaCosta RicaEl SalvadorGuatemalaHondurasNicaraguaPanamáParaguayPeruUruguayVenezuela Tristan da CunhaAruba
Native distribution of Dysphania ambrosioides, 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
Argentina Northeast AGE SOUTHERN AMERICA
Argentina Northwest AGW
Argentina South AGS
Aruba ARU
Belize BLZ
Bolivia BOL
Brazil North BZN
Brazil Northeast BZE
Brazil South BZS
Brazil Southeast BZL
Brazil West-Central BZC
Chile Central CLC
Chile North CLN
Chile South CLS
Colombia CLM
Costa Rica COS
El Salvador ELS
Guatemala GUA
Honduras HON
Nicaragua NIC
Panamá PAN
Paraguay PAR
Peru PER
Uruguay URU
Venezuela VEN
Arkansas ARK NORTHERN AMERICA
Florida FLA
Georgia GEO
Louisiana LOU
Maryland MRY
Mexico Central MXC
Mexico Gulf MXG
Mexico Northeast MXE
Mexico Southeast MXT
Mexico Southwest MXS
Mississippi MSI
North Carolina NCA
Oklahoma OKL
South Carolina SCA
Texas TEX
Virginia VRG
Tristan da Cunha TDC ANTARCTICA

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 119 in flower of 220 examined

Peak flowering in Sep. Each bar is the share of Dysphania ambrosioides 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. 119 of 220 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. One month has fewer than 5 examined observations, so no proportion is drawn for it. 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.

Where it actually grows measured, from 1,990 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low -4.6 °C 6.1 °C 15.2 °C
Warmest month, mean daily high 21.3 °C 28.2 °C 33.7 °C
Annual rainfall 315 mm 1,191 mm 2,840 mm
Rainfall in the driest quarter 5 mm 169 mm 309 mm

It is found where winters bring light frost. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 1,990 research-grade observations of Dysphania ambrosioides that carry a coordinate, and this is the range those places actually span. The 5th and 95th percentiles are used rather than the minimum and maximum, because a single cultivated specimen in a heated conservatory should not widen a tropical plant's range to the Arctic.

This is not a hardiness zone. A USDA zone is the average annual extreme minimum temperature. The figure above is the mean daily minimum of the coldest month, which is a different quantity and is typically far warmer. Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one. Climate from CHELSA V2.1 (Karger et al. 2017); occurrences from 10.15468/dl.cgje2x.

Also published as 66 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.

  • Ambrina ambrosioides (L.) Spach
  • Ambrina ambrosioides var. anthelmintica (L.) Moldenke
  • Ambrina anthelmintica (L.) Spach
  • Ambrina incisa (Poir.) Moq.
  • Ambrina parvula Phil.
  • Ambrina spathulata Moq.
  • Atriplex ambrosioides (L.) Crantz
  • Atriplex ambrosioides f. minus Aellen
  • Atriplex anthelmintica (L.) Crantz
  • Blitum ambrosioides Beck
  • Botrys ambrosioides (L.) Nieuwl.
  • Botrys anthelmintica (L.) Nieuwl.
  • Chenopodium album subsp. ambrosioides (L.) H.J.Coste & A.Reyn.
  • Chenopodium amboanum (Murr) Aellen
  • Chenopodium ambrosioides L.
  • Chenopodium ambrosioides f. angustifolium (Pav. ex Moq.) Aellen
  • Chenopodium ambrosioides f. dentatum (Fenzl) Aellen
  • Chenopodium ambrosioides f. integrifolium (Fenzl) Aellen
  • Chenopodium ambrosioides f. minus (Murr) Aellen
  • Chenopodium ambrosioides f. pinnatifidum (Willk.) Aellen
  • Chenopodium ambrosioides f. rotundatum Aellen
  • Chenopodium ambrosioides f. spathulatum (Moq.) Aellen
  • Chenopodium ambrosioides f. suffruticosum (Willd.) Aellen
  • Chenopodium ambrosioides subsp. suffruticosum (Willd.) Thell.

and 42 more.

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.