Filter common tree candidates using observable leaf features.
This teaching key compares eight tree entries found in Ireland and Britain, including introduced planted trees. A single match does not confirm a species; many trees outside this key share these features.
Inspect a whole leaf attached to a twig: leaflets are not separate leaves. Check buds, bark and fruit too. Young or cultivated leaves can differ; holly may lack spines. Observe without picking or tasting. Each result links to its botanical reference.
Instructions
- Inspect a whole leaf attached to its twig before choosing features.
- Set Whole leaves along the twig, Leaf structure, Blade / leaflet margin and Overall leaf outline.
- Leave unsure features at Any / unsure, then select Compare features.
- Check the linked references for candidates and use Download results or Print if useful.
Understanding your results
The key narrows eight tree entries found in Britain and Ireland, including planted trees. A compound leaf has separate leaflets that together form one leaf. One matching entry is still a candidate because many trees outside this small key share the same features.
What to do if the tree you expected does not appear
Check you have not mistaken a leaflet for a whole leaf. Return uncertain choices to Any / unsure and inspect several leaves. Young growth and cultivated forms can vary. Confirm candidates using buds, bark, fruit and the reference description.
Using this tool in your browser
This tool handles your entries in your browser with JavaScript enabled and does not save them automatically. Use the download or print controls described in the instructions to keep a copy before closing or reloading the page. On a phone, your browser controls where downloads go and which print options are available.
Summary
Look at multiple features on the same tree and keep uncertainty visible in your notes.