Tall flatsedge
Cyperus eragrostis Lam.
- light
- Full sun
- water
- Plenty
- tall
- 57 cm
- wide
- —
Cyperaceae
Also called Umbrella sedge, Pale galingale, Drain flat-sedge
Formerly Chlorocyperus eragrostis, Cyperus declinatus, Cyperus monandrus, Cyperus ochrocephalus, and 1 more
When it flowers
Not known yet in the tropics: too few flowering observations to read a season from.
Read from iNaturalist photographs of it in flower. A month counts at 50% of the best month's flowering share (smoothed over three months) and 10% of its flowering count, from at least 100 flowering observations in the band.
If a child, a pet or anyone may have eaten a plant, contact a doctor or vet straight away, or call the National Poisons Information Centre (AIIMS, New Delhi) on 1800 116 117, free and open 24 hours.
Something wrong with it?About it
- Grows as
- Perennial or rhizomatous geophyteKew's checklist, not yet checked
- Climate
- Seasonally dry tropicalKew's checklist, not yet checked
- Wild in
- Easter I., AmericaKew's checklist, not yet checked
- Light
- Full sun (6 h or more)Read from Wikipedia, one source
- Height
- 25 cm to 89 cmRead from Wikipedia, one source
- Water
- Plenty: wet or constantly moistRead from Wikipedia, one source
Not known yet: spread, flowers, coldest it survives, heat, hottest it survives.
In other languages (12)
- Portuguese
- Junção
- French
- Souchet robuste, Souchet vigoureux
- Chinese
- 畫眉莎草, 頭穗莎草, 密穗莎草
- Czech
- šáchor miličkový
- Japanese
- メリケンガヤツリ, オニシロガヤツリ
- Norwegian Bokmål
- skjermsivaks
- Finnish
- röllisädekaisla
- Russian
- Сыть полевичковая
- Swedish
- blekag
- Chinese (China)
- 密穗莎草
- Spanish
- sombrilla, Lleivún
- Dutch
- Bleek cypergras
Where this comes from
- iNaturalist, read 2026-10-25, CC0-1.0 (observation counts)
- Wikidata, read 2026-10-25, CC0-1.0
- Kew's checklist, read 2026-10-24, CC-BY-4.0
- Wikipedia, read 2026-10-25, fact, cited
- Wikimedia Commons, read 2026-10-25, CC BY-SA 3.0
- iNaturalist, read 2026-10-25, CC0
- iNaturalist, read 2026-10-25, CC BY
- iNaturalist, read 2026-10-25, CC0
- 3D model: Cyperus eragrostis (built for Vanagrha) by Vanagrha, own
A fact “checked by a majority of its sources” was settled by a vote of the pages it was read from, not by a person reading it; one marked “one source” rests on that page alone. Anything else not marked checked has not been checked yet. Where nothing is known, the page says so rather than guess.