Image to followAI-generated illustrationAlnus cordata
Alnus cordata
FamilyGenus: Alnusnon-native in Germany
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Interactions
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Host relationships
Species
About this species
Alnus cordata is an introduced, established deciduous tree in Great Britain, reaching about 18.8 m tall, with broad leaves and catkins that bloom from late autumn to early spring.
Ecological network
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Larval host
Ecological significance
Information on ecological impacts in Great Britain is not available.
Annual cycle
This deciduous tree sheds its leaves in autumn. Flowering catkins are present from November until March.
Standort & Merkmale
Light
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Moisture
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Soil
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Flowering period
Nov – Mär
Growth form
Baum
Woodiness
Verholzt
Leaf type
Breitblättrig
Leaf phenology
Laubabwerfend
Plant height
18.841 m
Morphological traits: TRY ID3 (CC BY 3.0) & TRY ID81 (CC BY)
Scientific profile
Alnus cordata is a member of the birch family (Betulaceae). It is an introduced deciduous tree that has become established in Great Britain. The species typically grows to a height of around 18.8 metres and bears broad leaves. Its leaves are relatively large, with an average area of about 5,483 mm². The tree flowers over an extended period, from November through to March, producing catkins. The winged seeds are light, with a mean diaspore mass of approximately 3.5 mg.
Sources & data origin
•Cook et al. (2025) UK Butterfly & Moth Traits (DOI: 10.5285/dbc7cc17-cbbd-49dd-bab4-8e8855768d66)
•GBIF Backbone Taxonomy — GBIF Secretariat (2024), DOI: 10.15468/39omei (CC BY 4.0)
•TRY Categorical Traits (ID3) — Kattge et al. (2012), DOI: 10.17871/TRY.3 (CC BY 3.0)
•TRY Global Spectrum (ID81) — Díaz et al. (2016/2021), DOI: 10.17871/TRY.81 (CC BY)
•Checklist Alien Plants Belgium — Verloove F (2023), Botanic Garden Meise (CC BY 4.0)
•Govaerts R et al. (2025) — World Checklist of Vascular Plants (WCVP) v14. Royal Botanic Gardens, Kew. DOI: 10.34885/xs7h-ze42 (CC BY 4.0)
All data is licensed under CC BY 4.0, CC0, or compatible terms. Attribution according to license conditions. Full source overview →