Carex peckiiHowe

Peck's sedge

WFO wfo-0000349860 Accepted WFO 2026-06 8 photographs CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Carex peckii, photographed by Quinten Wiegersma
fig. a Quinten Wiegersma, CC BY 4.0 / 2022-05-20 / obs. 203747773
Carex peckii, photographed by Henry "Nick" Robertson
fig. b Henry "Nick" Robertson, CC BY-SA 4.0 / obs. 197393385
Carex peckii, photographed by Henry "Nick" Robertson
fig. c Henry "Nick" Robertson, CC BY-SA 4.0 / obs. 197391372
Carex peckii, photographed by Henry "Nick" Robertson
fig. d Henry "Nick" Robertson, CC BY-SA 4.0 / obs. 196775465
Carex peckii, photographed by Katherine Baird
fig. e Katherine Baird, CC BY 4.0 / obs. 140437505
Carex peckii, photographed by Henry "Nick" Robertson
fig. f Henry "Nick" Robertson, CC BY-SA 4.0 / obs. 128296336
Carex peckii, photographed by Henry "Nick" Robertson
fig. g Henry "Nick" Robertson, CC BY-SA 4.0 / obs. 126831058
Carex peckii, photographed by Norma Malinowski
fig. h Norma Malinowski, CC BY 4.0 / obs. 76676334

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 Carex peckii is native: Alaska, Alberta, British Columbia, Colorado, Iowa, Maine, Manitoba, Massachusetts, Michigan, Minnesota, Nebraska, New Brunswick, New Hampshire, New York, North Dakota, Nova Scotia, Ontario, Québec, Saskatchewan, South Dakota, Vermont, Wisconsin, Wyoming, Yukon AlaskaAlbertaBritish ColumbiaColoradoIowaMaineManitobaMassachusettsMichiganMinnesotaNebraskaNew BrunswickNew HampshireNew YorkNorth DakotaNova ScotiaOntarioQuébecSaskatchewanSouth DakotaVermontWisconsinWyomingYukon
Native distribution of Carex peckii, 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.
RegionTDWG codeContinent
Alaska ASK NORTHERN AMERICA
Alberta ABT
British Columbia BRC
Colorado COL
Iowa IOW
Maine MAI
Manitoba MAN
Massachusetts MAS
Michigan MIC
Minnesota MIN
Nebraska NEB
New Brunswick NBR
New Hampshire NWH
New York NWY
North Dakota NDA
Nova Scotia NSC
Ontario ONT
Québec QUE
Saskatchewan SAS
South Dakota SDA
Vermont VER
Wisconsin WIS
Wyoming WYO
Yukon YUK

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 573 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low -17.6 °C -12.2 °C -9.0 °C
Warmest month, mean daily high 22.1 °C 25.1 °C 26.2 °C
Annual rainfall 490 mm 909 mm 1,184 mm
Rainfall in the driest quarter 52 mm 188 mm 233 mm

It is found where winters are severely cold. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 573 research-grade observations of Carex peckii 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 4 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.

  • Carex clivicola Fernald & Weath.
  • Carex emmonsii var. ellpitica Boott
  • Carex nigromarginata var. elliptica (Boott) Gleason
  • Carex peckii f. elongata Lepage

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.