Alnus viridis (Chaix) DC.
Alnus viridis is a shrub.
Alnus viridis was already described and the name validly published by Dominique Chaix. It was Augustin Pyramus de Candolle, however, who reclassified it into todays valid botanical systematics in 1805.
Alnus viridis is a species in the genus Alnus which contains approximately 57 to 79 species and belongs to the family of the Betulaceae (Birch Family). The type species of the genus is Alnus glutinosa.
The shrubs are comparatively slow-growing and reach heights of 2,5 to 3 metres.
Wood and Bark
Alnus viridis is deciduous. The dark-green, simple leaves are alternate. They are ovate and petiolate with dentate margins and pinnate venation.
Flowers and Fruits
Alnus viridis produces spikes of brown cruciform flowers from April to June. The plants are dioecious, pollination takes places by allogamy through the wind.
The shrubs carry brown samaras.
The plants form shallow roots.
Alnus viridis is native to France, the Apennine Peninsula, Central Europe, eastern Central Europe, the Balkan Peninsula, Eastern Europe, West-Siberia, East Siberia and Mongolia.
The shrubs prefer a sunny situation on moist soil. The substrate should be gritty loam with a pH between 6,5 and 7,5. They tolerate temperatures down to -45Â°C (USDA zone 2). The plants are suited for spring protection and bank protection of narrow flowing waters.
Classification after Prof. Dr. Sieber
- open areas
Suited as slope plant and as plant providing shelter for birds.
Maintenance and Propagation
Pests and Diseases
- Walter Erhardt, Erich GÃ¶tz, Nils BÃ¶deker, Siegmund Seybold: Der groÃe Zander. Eugen Ulmer KG, Stuttgart 2008, ISBN 978-3-8001-5406-7. (Ger.)
- Christoper Brickell (Editor-in-chief): RHS A-Z Encyclopedia of Garden Plants. Third edition. Dorling Kindersley, London 2003, ISBN 0-7513-3738-2.