Facelis retusa(Lam.) Sch.Bip.

annual trampweed

WFO wfo-0000016956 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Facelis retusa, photographed by Diana Foreman
fig. a Diana Foreman, CC0 1.0 / 2022-05-01 / obs. 193430358

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 20 botanical countries

Regions where Facelis retusa is native: Alabama, Arkansas, Florida, Georgia, Kansas, Louisiana, Mississippi, North Carolina, Oklahoma, South Carolina, Texas, Virginia, Argentina Northeast, Argentina Northwest, Argentina South, Brazil South, Chile Central, Chile North, Paraguay, Uruguay AlabamaArkansasFloridaGeorgiaKansasLouisianaMississippiNorth CarolinaOklahomaSouth CarolinaTexasVirginiaArgentina NortheastArgentina NorthwestArgentina SouthBrazil SouthChile CentralChile NorthParaguayUruguay
Native distribution of Facelis retusa, 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.
RegionTDWG codeContinent
Alabama ALA NORTHERN AMERICA
Arkansas ARK
Florida FLA
Georgia GEO
Kansas KAN
Louisiana LOU
Mississippi MSI
North Carolina NCA
Oklahoma OKL
South Carolina SCA
Texas TEX
Virginia VRG
Argentina Northeast AGE SOUTHERN AMERICA
Argentina Northwest AGW
Argentina South AGS
Brazil South BZS
Chile Central CLC
Chile North CLN
Paraguay PAR
Uruguay URU

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.

Where it actually grows measured, from 1,317 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low 0.8 °C 4.9 °C 10.5 °C
Warmest month, mean daily high 24.2 °C 31.5 °C 34.9 °C
Annual rainfall 873 mm 1,239 mm 1,670 mm
Rainfall in the driest quarter 142 mm 248 mm 343 mm

It is found where winters are cool but frost is light or absent. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 1,317 research-grade observations of Facelis retusa 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.

Also published as 13 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.

  • Facelis apiculata Cass.
  • Facelis retusa f. congesta Beauverd
  • Facelis retusa f. gigantea Beauverd
  • Facelis retusa f. laxa Beauverd
  • Facelis retusa f. nana Beauverd
  • Facelis retusa f. planifolia Beauverd
  • Facelis retusa f. retusa
  • Facelis retusa var. andicola Beauverd
  • Facelis retusa var. candelabrum Beauverd
  • Facelis retusa var. chilensis (Fisch. & Meyer) Baker
  • Facelis retusa var. retusa
  • Facelis retusa var. typica Beauverd
  • Gnaphalium retusum Lam.

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.