Plants › evening primrose family

Square-stemmed Willowherb

Epilobium tetragonum

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

All photos25

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.

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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.

United States	46,288
Alaska	46,274
Russia	376
Ukraine	80
Moscow Oblast	73
France	59
Czechia	58
United Kingdom	40
England	39
Germany	31

Counts show where people looked, not only where it lives.

Traits

Group and habits

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	myrtles, evening primroses, and allies · Myrtales
Family	evening primrose family · Onagraceae
Genus	willowherbs · Epilobium

Study it in a deck

Plants of Zaporizhia, Zaporizhia Oblast, Ukraine

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 Square-stemmed Willowherb 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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