Schoenoplectus triqueter(L.) Palla

Chair-maker's RushStreambank BulrushTriangular Club-rushstreambank bulrush

WFO wfo-0000528476 Accepted WFO 2026-06 8 photographs CC BY

Plate 1 figs. a–h · 3 observations

This species has been photographed under an open licence only 3 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 triqueter, photographed by Andre Hosper
fig. a Andre Hosper, CC BY 4.0 / 2021-09-05 / obs. 186558655
Schoenoplectus triqueter, photographed by Andre Hosper
fig. b Andre Hosper, CC BY 4.0 / obs. 186709683
Schoenoplectus triqueter, photographed by Ljaž
fig. c Ljaž, CC BY 4.0 / obs. 147708151
Schoenoplectus triqueter, photographed by Andre Hosper
fig. d Andre Hosper, CC BY 4.0 / obs. 186558671
Schoenoplectus triqueter, photographed by Ljaž
fig. e Ljaž, CC BY 4.0 / obs. 147708163
Schoenoplectus triqueter, photographed by Andre Hosper
fig. f Andre Hosper, CC BY 4.0 / obs. 186558692
Schoenoplectus triqueter, photographed by Ljaž
fig. g Ljaž, CC BY 4.0 / obs. 147708212
Schoenoplectus triqueter, photographed by Ljaž
fig. h Ljaž, CC BY 4.0 / obs. 147708239

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 55 botanical countries

Regions where Schoenoplectus triqueter is native: Canary Is., Cape Provinces, Egypt, Madeira, Northern Provinces, Afghanistan, Altay, China North-Central, China South-Central, China Southeast, Inner Mongolia, Iran, Japan, Kazakhstan, Kirgizstan, Korea, Manchuria, Mongolia, Nansei-shoto, North Caucasus, Ogasawara-shoto, Primorye, Qinghai, Tadzhikistan, Taiwan, Tibet, Transcaucasus, Türkiye, Uzbekistan, Xinjiang, India, Pakistan, West Himalaya, Austria, Belgium, Bulgaria, Czechia-Slovakia, East European Russia, France, Germany, Great Britain, Hungary, Ireland, Italy, Netherlands, NW. Balkan Pen., Portugal, Romania, Sardegna, Sicilia, South European Russia, Spain, Switzerland, Türkiye-in-Europe, Ukraine Cape ProvincesEgyptNorthern ProvincesAfghanistanAltayChina North-CentralChina South-CentralChina SoutheastInner MongoliaIranJapanKazakhstanKirgizstanManchuriaMongoliaNorth CaucasusPrimoryeQinghaiTadzhikistanTaiwanTibetTranscaucasusTürkiyeUzbekistanXinjiangIndiaPakistanWest HimalayaAustriaBelgiumBulgariaCzechia-SlovakiaEast European RussiaFranceGermanyHungaryIrelandItalyNetherlandsNW. Balkan Pen.PortugalRomaniaSiciliaSouth European RussiaSpainSwitzerlandTürkiye-in-EuropeUkraine Canary Is.MadeiraKoreaNansei-shotoSardegna
Native distribution of Schoenoplectus triqueter, 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
Afghanistan AFG ASIA-TEMPERATE
Altay ALT
China North-Central CHN
China South-Central CHC
China Southeast CHS
Inner Mongolia CHI
Iran IRN
Japan JAP
Kazakhstan KAZ
Kirgizstan KGZ
Korea KOR
Manchuria CHM
Mongolia MON
Nansei-shoto NNS
North Caucasus NCS
Ogasawara-shoto OGA
Primorye PRM
Qinghai CHQ
Tadzhikistan TZK
Taiwan TAI
Tibet CHT
Transcaucasus TCS
Türkiye TUR
Uzbekistan UZB
Xinjiang CHX
Austria AUT EUROPE
Belgium BGM
Bulgaria BUL
Czechia-Slovakia CZE
East European Russia RUE
France FRA
Germany GER
Great Britain GRB
Hungary HUN
Ireland IRE
Italy ITA
Netherlands NET
NW. Balkan Pen. YUG
Portugal POR
Romania ROM
Sardegna SAR
Sicilia SIC
South European Russia RUS
Spain SPA
Switzerland SWI
Türkiye-in-Europe TUE
Ukraine UKR
Canary Is. CNY AFRICA
Cape Provinces CPP
Egypt EGY
Madeira MDR
Northern Provinces TVL
India IND ASIA-TROPICAL
Pakistan PAK
West Himalaya WHM

Not drawn on the map: Ogasawara-shoto, Great Britain. We hold no public-domain boundary for these regions, so they are 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 32 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.

  • Cyperus triqueter (L.) Missbach & E.H.L.Krause
  • Eleogiton triqueter (L.) Fourr.
  • Heleogiton lejeunei (Weihe) Rchb.
  • Heleogiton trigonum (Roth) Rchb.
  • Heleogiton triquetrum (L.) Rchb.
  • Heleophylax triquetrus (L.) Schinz & Thell.
  • Hymenochaeta triquetra (L.) Nakai
  • Schoenoplectus triqueter f. conglomeratus (Döll) Soó
  • Schoenoplectus triqueter f. hoppei (Weihe) Soó
  • Schoenoplectus triqueter f. macrostachys (Junge) Soó
  • Schoenoplectus triqueter f. monostachys (Junge) Soó
  • Schoenoplectus triqueter f. pallidus (Döll) Soó
  • Schoenoplectus triqueter var. segregatus (C.B.Clarke) Karthik.
  • Schoenoplectus trisetosus (Tang & F.T.Wang) S.Yun Liang
  • Scirpus hoppei Weihe
  • Scirpus lejeunei Weihe
  • Scirpus mucronatus Host
  • Scirpus pollichii Godr.
  • Scirpus pollichii var. coriacea Franch. & Sav.
  • Scirpus seoanei Merino
  • Scirpus trigonus Roth
  • Scirpus triqueter L.
  • Scirpus triqueter f. conglomeratus Döll
  • Scirpus triqueter f. macrostachys Junge

and 8 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.