Schoenoplectus etuberculatus(Steud.) Soják

Canby's bulrush

WFO wfo-0000527046 Accepted WFO 2026-06 8 photographs CC0 / 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.

Schoenoplectus etuberculatus, photographed by Scott Ward
fig. a Scott Ward, CC BY 4.0 / 2021-03-11 / obs. 115562398
Schoenoplectus etuberculatus, photographed by Derek
fig. b Derek, CC BY 4.0 / obs. 3162928
Schoenoplectus etuberculatus, photographed by Derek
fig. c Derek, CC BY 4.0 / obs. 3162929
Schoenoplectus etuberculatus, photographed by John Kees
fig. d John Kees, CC0 1.0 / obs. 197365541
Schoenoplectus etuberculatus, photographed by Matt Berger
fig. e Matt Berger, CC BY 4.0 / obs. 153994591
Schoenoplectus etuberculatus, photographed by Scott Ward
fig. f Scott Ward, CC BY 4.0 / obs. 113989682
Schoenoplectus etuberculatus, photographed by John Kees
fig. g John Kees, CC0 1.0 / obs. 197365505
Schoenoplectus etuberculatus, photographed by Scott Ward
fig. h Scott Ward, CC BY 4.0 / obs. 67832411

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 13 botanical countries

Regions where Schoenoplectus etuberculatus is native: Alabama, Delaware, Florida, Georgia, Louisiana, Maryland, Mississippi, Missouri, North Carolina, Rhode I., South Carolina, Texas, Virginia AlabamaFloridaGeorgiaLouisianaMarylandMississippiMissouriNorth CarolinaSouth CarolinaTexasVirginia DelawareRhode I.
Native distribution of Schoenoplectus etuberculatus, 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
Delaware DEL
Florida FLA
Georgia GEO
Louisiana LOU
Maryland MRY
Mississippi MSI
Missouri MSO
North Carolina NCA
Rhode I. RHO
South Carolina SCA
Texas TEX
Virginia VRG

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 6 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.

  • Rhynchospora etuberculata Steud.
  • Scirpus canbyi A.Gray
  • Scirpus erythropodus Kuntze
  • Scirpus etuberculatus (Steud.) Kuntze
  • Scirpus leptolepis Chapm.
  • Scirpus macranthus Boeckeler

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.