Alnus viridis

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Alnus viridis (Chaix) DC.

Betulaceae

Life form: shrub

Exposure: sun   2

Moisture: moist

Soil: gritty loam

Arrangement: alternate
Leaves: decidious

Shape: ovate

Division: simple

Shape: cruciform
Fruit: samara

165B / 92481f 

Inflorescence: spike

Petals: not specified
Habit: not specified

Growth form: not specified

Taxonomy

Divisio:
Magnoliophyta
Subdivisio:
Magnoliophytina
Classis:
Rosopsida
Subclassis:
Hamamelididae
Superordo:
Faganae
Ordo:
Corylales

Alnus viridis is a shrub.

Naming

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.

Taxonomy

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.

Characteristics

Alnus viridis - leaves
Alnus viridis - flowers
Alnus viridis - branches
Alnus viridis - fruits

Growth

The shrubs are comparatively slow-growing and reach heights of 2,5 to 3 metres.

Wood and Bark

Leaves

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.

Root System

The plants form shallow roots.

Distribution

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.

Cultivation

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 -45°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

Uses

Suited as slope plant and as plant providing shelter for birds.

Maintenance and Propagation

Cultivars

Pests and Diseases

Literature

  • Walter Erhardt, Erich Götz, Nils Bödeker, Siegmund Seybold: Der große 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.

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