Bolboschoenus planiculmis(F.Schmidt) T.V.Egorova

WFO wfo-0000341715 Accepted WFO 2026-06 8 photographs CC0 / CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Bolboschoenus planiculmis, photographed by Zinogre
fig. a Zinogre, CC BY-SA 4.0 / 2022-05-26 / obs. 200731983
Bolboschoenus planiculmis, photographed by 葉子
fig. b 葉子, CC0 1.0 / obs. 138266888
Bolboschoenus planiculmis, photographed by 葉子
fig. c 葉子, CC0 1.0 / obs. 84699460
Bolboschoenus planiculmis, photographed by 葉子
fig. d 葉子, CC0 1.0 / obs. 56013111
Bolboschoenus planiculmis, photographed by 葉子
fig. e 葉子, CC0 1.0 / obs. 44878159
Bolboschoenus planiculmis, photographed by Юлия
fig. f Юлия, CC BY 4.0 / obs. 203741609
Bolboschoenus planiculmis, photographed by Юлия
fig. g Юлия, CC BY 4.0 / obs. 150929703
Bolboschoenus planiculmis, photographed by Юлия
fig. h Юлия, CC BY 4.0 / obs. 141908952

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 48 botanical countries

Regions where Bolboschoenus planiculmis is native: Altay, Buryatiya, China North-Central, China South-Central, China Southeast, Chita, Inner Mongolia, Iran, Irkutsk, Japan, Kamchatka, Kazakhstan, Khabarovsk, Kirgizstan, Korea, Krasnoyarsk, Manchuria, Mongolia, North Caucasus, Primorye, Qinghai, Sakhalin, Tadzhikistan, Taiwan, Transcaucasus, Tuva, West Siberia, Xinjiang, Yakutiya, India, New Guinea, Philippines, Austria, Bulgaria, Central European Russia, Czechia-Slovakia, East European Russia, France, Germany, Italy, Krym, NW. Balkan Pen., Poland, Romania, South European Russia, Spain, Switzerland, Ukraine AltayBuryatiyaChina North-CentralChina South-CentralChina SoutheastChitaInner MongoliaIranIrkutskJapanKamchatkaKazakhstanKhabarovskKirgizstanKrasnoyarskManchuriaMongoliaNorth CaucasusPrimoryeQinghaiSakhalinTadzhikistanTaiwanTranscaucasusTuvaWest SiberiaXinjiangYakutiyaIndiaNew GuineaPhilippinesAustriaBulgariaCentral European RussiaCzechia-SlovakiaEast European RussiaFranceGermanyItalyKrymNW. Balkan Pen.PolandRomaniaSouth European RussiaSpainSwitzerlandUkraine Korea
Native distribution of Bolboschoenus planiculmis, 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
Altay ALT ASIA-TEMPERATE
Buryatiya BRY
China North-Central CHN
China South-Central CHC
China Southeast CHS
Chita CTA
Inner Mongolia CHI
Iran IRN
Irkutsk IRK
Japan JAP
Kamchatka KAM
Kazakhstan KAZ
Khabarovsk KHA
Kirgizstan KGZ
Korea KOR
Krasnoyarsk KRA
Manchuria CHM
Mongolia MON
North Caucasus NCS
Primorye PRM
Qinghai CHQ
Sakhalin SAK
Tadzhikistan TZK
Taiwan TAI
Transcaucasus TCS
Tuva TVA
West Siberia WSB
Xinjiang CHX
Yakutiya YAK
Austria AUT EUROPE
Bulgaria BUL
Central European Russia RUC
Czechia-Slovakia CZE
East European Russia RUE
France FRA
Germany GER
Italy ITA
Krym KRY
NW. Balkan Pen. YUG
Poland POL
Romania ROM
South European Russia RUS
Spain SPA
Switzerland SWI
Ukraine UKR
India IND ASIA-TROPICAL
New Guinea NWG
Philippines PHI

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 190 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low -26.5 °C -9.7 °C 14.2 °C
Warmest month, mean daily high 17.6 °C 25.3 °C 31.2 °C
Annual rainfall 348 mm 578 mm 3,091 mm
Rainfall in the driest quarter 11 mm 76 mm 513 mm

It is found where winters are arctic. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 190 research-grade observations of Bolboschoenus planiculmis 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 8 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.

  • Bolboschoenus koshewnikowii (Litv.) A.E.Kozhevn.
  • Bolboschoenus maritimus subsp. planiculmis (F.Schmidt) D.Pav. & M.Pires
  • Bolboschoenus maritimus var. planiculmis (F.Schmidt) Jauzein
  • Scirpus iseensis T.Koyama & Shimizu
  • Scirpus koshewnikowii Litv.
  • Scirpus koshewnikowii Litv. ex Kotsom
  • Scirpus maritimus var. distigmaticus Maxim.
  • Scirpus planiculmis F.Schmidt

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. 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.