Callitriche terrestrisRaf.

Terrestrial water-starwortterrestrial water-starwort

WFO wfo-0000778362 Accepted WFO 2026-06 8 photographs CC BY

Plate 1 figs. a–h · 6 observations

This species has been photographed under an open licence only 6 times, so some figures below are different views of the same plant, taken on the same day, rather than different individuals. They are usually different parts of it: the leaf, the flower, the bark.

Callitriche terrestris, photographed by John Abrams
fig. a John Abrams, CC BY 4.0 / 2020-06-15 / obs. 79018140
Callitriche terrestris, photographed by Diogo Luiz
fig. b Diogo Luiz, CC BY 4.0 / obs. 57203232
Callitriche terrestris, photographed by Zihao Wang
fig. c Zihao Wang, CC BY 4.0 / obs. 170166779
Callitriche terrestris, photographed by Zihao Wang
fig. d Zihao Wang, CC BY 4.0 / obs. 135744687
Callitriche terrestris, photographed by Bonnie Semmling
fig. e Bonnie Semmling, CC BY 4.0 / obs. 132267824
Callitriche terrestris, photographed by John Michael
fig. f John Michael, CC BY 4.0 / obs. 124147887
Callitriche terrestris, photographed by Zihao Wang
fig. g Zihao Wang, CC BY 4.0 / obs. 135744787
Callitriche terrestris, photographed by Bonnie Semmling
fig. h Bonnie Semmling, CC BY 4.0 / obs. 132267804

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 Callitriche terrestris is native: Arkansas, Connecticut, Delaware, District of Columbia, Illinois, Indiana, Kansas, Kentucky, Louisiana, Maryland, Massachusetts, Mexico Central, Mexico Gulf, Mississippi, Missouri, New Brunswick, New York, North Carolina, North Dakota, Ohio, Pennsylvania, Tennessee, Texas, Virginia, West Virginia, Wisconsin, Argentina Northeast, Argentina Northwest, Bolivia, Brazil Northeast, Brazil South, Brazil Southeast, Colombia, Costa Rica, Ecuador, Guatemala, Honduras, Peru, Venezuela ArkansasConnecticutIllinoisIndianaKansasKentuckyLouisianaMarylandMassachusettsMexico CentralMexico GulfMississippiMissouriNew BrunswickNew YorkNorth CarolinaNorth DakotaOhioPennsylvaniaTennesseeTexasVirginiaWest VirginiaWisconsinArgentina NortheastArgentina NorthwestBoliviaBrazil NortheastBrazil SouthBrazil SoutheastColombiaCosta RicaEcuadorGuatemalaHondurasPeruVenezuela DelawareDistrict of Columbia
Native distribution of Callitriche terrestris, 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
Arkansas ARK NORTHERN AMERICA
Connecticut CNT
Delaware DEL
District of Columbia WDC
Illinois ILL
Indiana INI
Kansas KAN
Kentucky KTY
Louisiana LOU
Maryland MRY
Massachusetts MAS
Mexico Central MXC
Mexico Gulf MXG
Mississippi MSI
Missouri MSO
New Brunswick NBR
New York NWY
North Carolina NCA
North Dakota NDA
Ohio OHI
Pennsylvania PEN
Tennessee TEN
Texas TEX
Virginia VRG
West Virginia WVA
Wisconsin WIS
Argentina Northeast AGE SOUTHERN AMERICA
Argentina Northwest AGW
Bolivia BOL
Brazil Northeast BZE
Brazil South BZS
Brazil Southeast BZL
Colombia CLM
Costa Rica COS
Ecuador ECU
Guatemala GUA
Honduras HON
Peru PER
Venezuela VEN

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.

Also published as 7 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.

  • Callitriche austinii Engelm.
  • Callitriche deflexa var. austini (Engelm.) Hegelm.
  • Callitriche deflexa var. austinii (Engelm.) Hegelm.
  • Callitriche deflexa var. subsessilis Fassett
  • Callitriche pedunculata A.Gray ex Hegelm.
  • Callitriche terrestris subsp. subsessilis (Fassett) Bacig.
  • Callitriche verna var. terrestris (Raf.) Torr.

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.