Callitriche obtusangulaLe Gall

blunt-fruited water-starwort

WFO wfo-0000777853 Accepted WFO 2026-06 4 photographs CC0 / CC BY

Plate 1 figs. a–d · 2 observations

This species has been photographed under an open licence only 2 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 obtusangula, photographed by Jean-Paul Boerekamps
fig. a Jean-Paul Boerekamps, CC0 1.0 / 2022-02-13 / obs. 179258796
Callitriche obtusangula, photographed by Donald Davesne
fig. b Donald Davesne, CC BY 4.0 / obs. 121177845
Callitriche obtusangula, photographed by Jean-Paul Boerekamps
fig. c Jean-Paul Boerekamps, CC0 1.0 / obs. 179258786
Callitriche obtusangula, photographed by Jean-Paul Boerekamps
fig. d Jean-Paul Boerekamps, CC0 1.0 / obs. 179258805

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 21 botanical countries

Regions where Callitriche obtusangula is native: Algeria, Morocco, Tunisia, West Himalaya, Albania, Austria, Belgium, Corse, France, Germany, Great Britain, Greece, Ireland, Italy, Netherlands, NW. Balkan Pen., Portugal, Sardegna, Sicilia, Spain, Switzerland AlgeriaMoroccoTunisiaWest HimalayaAlbaniaAustriaBelgiumCorseFranceGermanyGreeceIrelandItalyNetherlandsNW. Balkan Pen.PortugalSiciliaSpainSwitzerland Sardegna
Native distribution of Callitriche obtusangula, 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
Albania ALB EUROPE
Austria AUT
Belgium BGM
Corse COR
France FRA
Germany GER
Great Britain GRB
Greece GRC
Ireland IRE
Italy ITA
Netherlands NET
NW. Balkan Pen. YUG
Portugal POR
Sardegna SAR
Sicilia SIC
Spain SPA
Switzerland SWI
Algeria ALG AFRICA
Morocco MOR
Tunisia TUN
West Himalaya WHM ASIA-TROPICAL

Not drawn on the map: Great Britain. We hold no public-domain boundary for this region, so it is listed rather than guessed at.

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 5 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 aquatica subsp. obtusangula (Le Gall) Bonnier
  • Callitriche obtusangula f. heterophylla Glück
  • Callitriche obtusangula f. submersa Glück
  • Callitriche obtusangula f. terrestris Glück
  • Callitriche palustris subsp. obtusangula (Le Gall) Jahand. & Maire

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.