Plants › Sunflowers, Daisies, Asters, and Allies

horseweed

Erigeron canadensis

Wildlife study photograph from iNaturalist. — (c) kelly_seager, some rights reserved (CC BY-NC)

All photos29

29 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.

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Photos you add are credited to you, and you keep the copyright.

Easily confused with

Study checks a spoken answer against these, and tells you which one you named.

Where it is recorded

Records by month in Alaska.

Alaska	110,988
United States	68,743
Russia	14,209
Texas	9,373
California	7,911
Canada	7,103
New York	5,146
Ontario	3,449
Pennsylvania	2,523
Massachusetts	2,444

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
Toxic to humansListed as toxic or not suitable as food for humans by a harvested source.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
Fuel useListed as being used for fuel by a harvested source.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
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	fleabanes and horseweeds · Erigeron

Study it in a deck

Or build your own from the species near you.

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 horseweed with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.

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