Plants › Sunflowers, Daisies, Asters, and Allies
Yellow-flowered blackjack
Bidens biternata
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
Hairy BeggarticksBidens pilosa
Spanish needlesBidens bipinnataStudy checks a spoken answer against these, and tells you which one you named.
Where it is recorded
| China | 17 |
|---|---|
| Shandong Province | 8 |
| South Africa | 7 |
| Australia | 6 |
| South Korea | 5 |
| Queensland | 4 |
| Gauteng | 4 |
| South Chungcheong | 4 |
| Japan | 3 |
| Hunan Province | 3 |
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
- Material useListed as being used for materials such as wood, fiber, resin, gum, or oil.Kew World Checklist of Useful Plant Species
- Crop wild relativeListed as a crop wild relative or crop gene source by a harvested source.Kew World Checklist of Useful Plant Species
- Pollinator-associated plantDescends from a plant lineage commonly associated with pollinators.Inferred from its group
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 | Sunflowers, Bellflowers, Fanflowers, and Allies · Asterales |
| Family | Sunflowers, Daisies, Asters, and Allies · Asteraceae |
| Genus | Beggarticks · Bidens |
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 Yellow-flowered blackjack with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.