Carex fusculad'Urv.

widow's sedge

WFO wfo-0000346900 Accepted WFO 2026-06 5 photographs CC BY

Plate 1 figs. a–e · 1 observation

This species has been photographed under an open licence only 1 time, 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.

Carex fuscula, photographed by Nolan Exe
fig. a Nolan Exe, CC BY 4.0 / 2019-12-14 / obs. 60448725

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 6 botanical countries

Regions where Carex fuscula is native: Falkland Is., Argentina Northwest, Argentina South, Bolivia, Chile Central, Chile South Falkland Is.Argentina NorthwestArgentina SouthBoliviaChile CentralChile South
Native distribution of Carex fuscula, 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
Argentina Northwest AGW SOUTHERN AMERICA
Argentina South AGS
Bolivia BOL
Chile Central CLC
Chile South CLS
Falkland Is. FAL ANTARCTICA

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 132 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low -4.1 °C 2.9 °C 6.9 °C
Warmest month, mean daily high 10.9 °C 17.7 °C 24.6 °C
Annual rainfall 641 mm 1,831 mm 3,569 mm
Rainfall in the driest quarter 84 mm 177 mm 558 mm

It is found where winters bring light frost. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 132 research-grade observations of Carex fuscula 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 28 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 araucana Phil.
  • Carex brachycephala Poepp. ex Boott
  • Carex calbucana Phil.
  • Carex distenta Kunze ex Kunth
  • Carex fuscula f. elatior Kurtz
  • Carex fuscula f. fuscula
  • Carex fuscula f. indecora (Kunth) Kük.
  • Carex fuscula subsp. fuscula
  • Carex fuscula var. ciliata Boeckeler
  • Carex fuscula var. distenta (Kunze ex Kunth) Kük.
  • Carex fuscula var. fuscula
  • Carex fuscula var. hieronymi (Boeckeler) Kük.
  • Carex fuscula var. pseudoextensa (Kük.) Kük.
  • Carex hieronymi Boeckeler
  • Carex huitensis Steud.
  • Carex hymenina Nees ex Boott
  • Carex inconspicua Steud.
  • Carex inconspicua f. indecora (Kunth) Kük.
  • Carex inconspicua var. fuscula d'Urv.
  • Carex inconspicua var. fuscula (d'Urv.) Kük.
  • Carex inconspicua var. hieronymi (Boeckeler) Kük.
  • Carex inconspicua var. pseudoextensa Kük.
  • Carex incurva var. humilis Macloskie
  • Carex indecora Boott

and 4 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. USDA PLANTS Database. common name, checklist symbol CADI17. public domain. 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.