Plate 1 figs. a–h · 8 separate observations
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 95 botanical countries
Not drawn on the map: Socotra, Kazan-retto, Ogasawara-shoto, Easter Is.. 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.
Flowering 61 in flower of 96 examined
Peak flowering in Oct. Each bar is the share of Cyperus cyperoides observations in which someone actually recorded the reproductive state and found the plant in flower, not the raw number of flowering records. That distinction matters: people observe plants far more in spring than in winter, so a bare count of flowering records partly measures when people go outside. Dividing by the number examined removes that. 61 of 96 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 3 months have fewer than 5 examined observations, so no proportion is drawn for them. This is still a global aggregate and not a forecast for your garden: the same species flowers on different dates in different hemispheres. Where a species has fewer than 30 flowering records we do not draw this chart at all. Computed from 10.15468/dl.cgje2x.
Also published as 79 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 biglumis C.B.Clarke
- Cyperus corynephorus Lock
- Cyperus cylindrostachys var. subcompositus (C.B.Clarke) Skottsb.
- Cyperus cylindrostachyus var. subcompositus (C.B.Clarke) Skottsb.
- Cyperus cyperoides Britton
- Cyperus cyperoides subsp. cyperoides
- Cyperus cyperoides subsp. flavus Lye
- Cyperus cyperoides var. aureus Peter ex Kük.
- Cyperus cyperoides var. brevispicatus Kük.
- Cyperus cyperoides var. clarkei (Turrill ex Craib) Kük.
- Cyperus cyperoides var. evolutior (C.B.Clarke) Kük.
- Cyperus cyperoides var. khasianus (C.B.Clarke) Kük.
- Cyperus cyperoides var. microstachys Kük.
- Cyperus cyperoides var. nossibeensis (Steud.) Kük.
- Cyperus cyperoides var. ovalis Kük.
- Cyperus cyperoides var. polyphyllus Kük.
- Cyperus cyperoides var. repens Kük.
- Cyperus cyperoides var. subcompositus (C.B.Clarke) Kük.
- Cyperus flexifolius Boeckeler ex Reinecke
- Cyperus konkanensis T.Cooke
- Cyperus linctus G.Forst.
- Cyperus macrocarpus var. humbertii (Cherm.) Kük.
- Cyperus macrocarpus var. submacrocarpus Kük.
- Cyperus manilensis Boeckeler ex Warb.
and 55 more.
Sourcesevery claim on this page
- World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
- iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
- Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
- 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.