Plants › knotweed family
Devil's Thorn
Rumex spinosus
25 photos
Study shows up to four per card, from different observers, so you learn the species rather than one picture. Heart the good ones and swap any you do not like.
Photos you add are credited to you, and you keep the copyright.
Easily confused with
Threecorner JackRumex hypogaeus
BeetBeta vulgaris
curled dockRumex crispus
broad-leaved dockRumex obtusifolius
Common Sow-thistleSonchus oleraceus
Creeping SaltbushAtriplex prostrata
Ruby DockRumex vesicarius
Japanese knotweedReynoutria japonica
Study checks a spoken answer against these, and tells you which one you named.
Where it is recorded
| California | 661 |
|---|---|
| United States | 554 |
| Spain | 167 |
| Israel | 105 |
| Andalucía | 77 |
| Portugal | 59 |
| FARO | 52 |
| Morocco | 46 |
| Central District | 40 |
| Canarias | 37 |
Counts show where people looked, not only where it lives.
Traits
Group and habits
- Human edibleListed as edible by a harvested source. This is a research trait, not foraging advice.Kew World Checklist of Useful Plant Species
- Medicinal useListed as having medicinal use by a harvested source. This is not medical advice.Kew World Checklist of Useful Plant Species
Edibility, toxicity and medicinal traits are records from datasets, not advice. Never eat, handle or use a wild species on the strength of an app.
Classification
| Kingdom | Plants · Plantae |
|---|---|
| Phylum | Vascular Plants · Tracheophyta |
| Class | Dicots · Magnoliopsida |
| Order | pinks, cactuses, and allies · Caryophyllales |
| Family | knotweed family · Polygonaceae |
| Genus | docks and sorrels · Rumex |
Sources
- Names, taxonomy and observation counts: www.inaturalist.org
- Photos and recordings: the creator and source are on each one.
- Traits: Kew World Checklist of Useful Plant Species (CC BY 4.0)
- How much to rely on each source
Remember the name next time.
Practise Devil's Thorn with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.