Scirpus hattorianusMakino

mosquito bulrush

WFO wfo-0000538825 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Scirpus hattorianus, photographed by Elizabeth Axley
fig. a Elizabeth Axley, CC BY 4.0 / 2021-11-18 / obs. 169457317
Scirpus hattorianus, photographed by Quinten Wiegersma
fig. b Quinten Wiegersma, CC BY 4.0 / obs. 139518021
Scirpus hattorianus, photographed by Étienne Lacroix-Carignan
fig. c Étienne Lacroix-Carignan, CC0 1.0 / obs. 122876576
Scirpus hattorianus, photographed by Quinten Wiegersma
fig. d Quinten Wiegersma, CC BY 4.0 / obs. 97552043
Scirpus hattorianus, photographed by Quinten Wiegersma
fig. e Quinten Wiegersma, CC BY 4.0 / obs. 49954805
Scirpus hattorianus, photographed by aarongunnar
fig. f aarongunnar, CC BY 4.0 / obs. 23955531
Scirpus hattorianus, photographed by aarongunnar
fig. g aarongunnar, CC BY 4.0 / obs. 24306102
Scirpus hattorianus, photographed by aarongunnar
fig. h aarongunnar, CC BY 4.0 / obs. 10896312

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 24 botanical countries

Regions where Scirpus hattorianus is native: Connecticut, Illinois, Indiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, New Brunswick, New Hampshire, New Jersey, New York, Newfoundland, North Carolina, Nova Scotia, Ohio, Ontario, Pennsylvania, Québec, Rhode I., Vermont, Virginia, West Virginia, Wisconsin ConnecticutIllinoisIndianaMaineMarylandMassachusettsMichiganMinnesotaNew BrunswickNew HampshireNew JerseyNew YorkNewfoundlandNorth CarolinaNova ScotiaOhioOntarioPennsylvaniaQuébecVermontVirginiaWest VirginiaWisconsin Rhode I.
Native distribution of Scirpus hattorianus, 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
Connecticut CNT NORTHERN AMERICA
Illinois ILL
Indiana INI
Maine MAI
Maryland MRY
Massachusetts MAS
Michigan MIC
Minnesota MIN
New Brunswick NBR
New Hampshire NWH
New Jersey NWJ
New York NWY
Newfoundland NFL
North Carolina NCA
Nova Scotia NSC
Ohio OHI
Ontario ONT
Pennsylvania PEN
Québec QUE
Rhode I. RHO
Vermont VER
Virginia VRG
West Virginia WVA
Wisconsin WIS

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 2 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.

  • Scirpus atrovirens subsp. hattorianus (Makino) Verloove & Lambinon
  • Scirpus atrovirens subvar. viviparus Farw.

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.