Coontail
കരിംപായൽ
Ceratophyllum demersum L.
- light
- —
- water
- —
- tall
- 2.0 m
- wide
- —
Ceratophyllaceae
Also called Rigid hornwort, Coon's tail, Hornwort, Common hornwort, Coon's-Tail
Formerly Dichotophyllum demersum
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
- Hydroannual or hydrosubshrubKew's checklist, not yet checked
- Climate
- TemperateKew's checklist, not yet checked
- Wild in
- CosmopolitanKew's checklist, not yet checked
- Height
- 99 cm to 3.0 mRead from Wikipedia, one source
- Flowers
- Green, brownRead from Wikipedia, one source
Not known yet: light, spread, water, coldest it survives, heat, hottest it survives.
In other languages (12)
- root
- CERDEM
- French
- Cératophylle nageant, Cornifle immergé, Cornifle nageant
- Portuguese
- erva-do-peixe-dourado, Rabo-de-raposa
- German
- Raues Hornblatt, Rauhes Hornblatt
- Hebrew
- קרנן טבוע
- Czech
- růžkatec ostnitý, růžkatec ponořený
- Swedish
- Hornsärv
- Arabic
- شمبلان مغمور, ذيل الراكون, ذيل الثعلب
- Chinese
- 金魚藻, 普通金鱼藻, 金鱼藻
- Danish
- Tornfrøet hornblad
- Dutch
- Grof hoornblad, grof hoornblad
- Russian
- Роголистник погружённый
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, Public domain
- iNaturalist, read 2026-10-25, CC BY
- iNaturalist, read 2026-10-25, CC BY
- iNaturalist, read 2026-10-25, CC BY-SA
- 3D model: Ceratophyllum demersum (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.