Taxonomy fact sheet: Alnus glutinosa  (L.) Gaertn. Accepted name

Nomenclature

Taxonomy

Kingdom Plantae Browse at kingdom-level
Order Fagales Engl. Browse at order-level
Family Betulaceae Gray Browse at family-level
Genus Alnus Mill. Browse at genus-level
Section
Species Alnus glutinosa (L.) Gaertn. Browse at species-level
Subspecies
Variety
Form
Cultivar
Strain

Binomial synonyms


Common names

Common name Language
European alder English
Black European alder
Black alder
Common alder
Sticky alder
Tervaleppä Finnish
Aulne French
Vergne
Aliso Spanish

Genealogy

Genetics

Chromosome pairs 28
Parentage background No parentage background information stored.
Ploidy level No ploidy level information stored.
Species identifier DNA No species identifier DNA information stored.

Subspecies

No known subspecies for this entry in the database.


Distribution

No distribution maps for this entry in the database.


Macromorphology

Description
A monoecious tree, 18–25m; somethimes a low multiple-stemmed bush, broadleaved, native to most of Europe. Leaves are spirally arranged, with caducous stipules. Catkins grow in terminal compound inflorescences, the lowermost branch with female catkins, the rest are generally with only male ones. The catkins are usually formed during the autumn before flowering. the whole male part of the compound inflorescence drops after anthesis. The fruits are released in late autumn or winter. Morphological variation may occur naturally due to isolation, small population size, different environmental conditions and hybridization between certain related (most often) species. For example, hybrids often have traits which are intermediate compared to their parental species. For example, Alnus glutinosa and A. incana may have hybridized in nature.
Growth form
Tree, shrub (sometimes)
Organism part
Bark
Surface
Smooth (young), fissured, rough (when older)
Color
Dark brown, almost black (old)
Stems, twigs, branches
Surface
Glabrous (young), glutinous glands (young)
Color
Greenish brown (current year), reddish brown (current year)
Shape
Triangular (young), roundish
Leaves, leaflets
Surface
Glabrous, glutinous (when young), sticky above (young), shiny (upper surface), tuft of hairs in the angles of the principal veins beneath
Color
Dark green (above), light green (below)
Shape
Orbicular, broadly obovate, elliptic, suborbicular
Leaf division
Simple
Leaf apex
Blunt, obtuse, truncate, shallowly emarginate (sometimes), emarginate
Leaf base
Broadly cuneate, rounded
Leaf margins
Doubly serrate, low rounded primary teeth, finely or coarsely serrate excep at the cuneate base
Leaf stipules
Ovate, lanceolate, glabrous
Leaf permanence
Deciduous
Flowers, inflorescences
Part type
Male catkins 2-5 at the end of branch, female erect catkins (3-6 catkins in a usually down-curved raceme), female flower lack perianth
Color
Red-brown (male catkins), red to reddish-brown, becoming green in fruit (female catkins)
Shape
Slender, long, drooping, pendent at anthesis (male catkins), short, stiff at anthesis, later ovoid, scales persistent, finally cone-like (female catkins)
Note
Flowering starts before bud burst.
Fruits
Part type
Nut, cone-like, stalked fruit clusters
Surface
Woody, scales
Color
Brown, blackening (after the fall of the nutlets)
Shape
Nearly round, ovoid (fruiting catkins), oval
Note
One-seeded fruit
Spores, seeds
Color
Dark reddish-brown
Shape
Broadly obovate, ovate, flattened
Note
Resinous coat; average number of seed per catkin is 60
Stem modifications, roots
Note
Nodules (with nitrogen-fixing actinomycetes); suckers are rare

Chemicals


Images

Alnus glutinosa
Alnus glutinosa

Color swatches

Common alder (cones) (1)

natural white 100% wool , iron (Fe) mordant (2-5%)

Details

Common alder (cones) (2)

Wool yarn , no mordanting

Details

Common alder (cones) (3)

Wool yarn , no mordanting

Details

Common alder (cones) (4)

Wool yarn , alum 10%, pre-mordanting

Details

Common alder (cones) (5)

Wool yarn , alum 10%, pre-mordanting

Details

Common alder (fresh bark) (1)

Wool yarn , rust (iron)

Details

Common alder (fresh bark) (2)

Wool yarn , rust (iron)

Details

References

  1. T. Houston Durrant, D. de Rigo, and G. Caudullo, Alnus glutinosa in Europe: distribution, habitat, usage and threats. In: San-Miguel-Ayanz, J., de Rigo, D., Caudullo, G., Houston Durrant, T., Mauri, A. (Eds.), European Atlas of Forest Tree Species.. Publication Office of the European Union, Luxembourg. pp., 2016 , DOI: 10.2760/776635
  2. R. Tirri, J. Lehtonen, R. Lemmetyinen, *. Pihakaski, and P. Portin, Biologian sanakirja. Dictionary of biology.. Otavan Kirjapaino Oy, 2001
  3. D. McVean, "Biological flora of the British Isles. Alnus glutinosa (L.) Gaertn," Journal of Ecology. British Ecological Society. , vol. 41 , no. 2 , pp. 447–466 , DOI: 10.2307/2257070 .
  4. A. Kurtto, R. Lampinen, M. Piirainen, and P. Uotila, Checklist of the vascular plants of Finland. Suomen putkilokasvien luettelo. Helsinki.. Finnish Museum of Natural History LUOMUS, 2019
  5. B. Jonsell, Flora Nordica. Volume 1. Lycopodiaceae to Polygonaceae.. The Bergius Foundation. The Royal Swedish Academy of Sciences. Stockholm. Sweden-, 2000
  6. "Flora of North America. Alnus glutinosa. Distribution map.," 2020 . [Online]. Available: http://www.efloras.org/object_page.aspx?object_id=5474&flora_id=1 . [Accessed Feb. 12, 2020].
  7. G. Jurkšienė, S. Tamošaitis, D. Kavaliauskas, J. Buchovska, D. Danusevičius, and V. Baliuckas, "Identification of Alnus glutinosa L. and A. incana (L.) Moench. hybrids in natural forests using nuclear DNA microsatellite and morphometric markers.," Forests , vol. 12 , no. 11 , pp. 1504 , DOI: 10.3390/f12111504 .
  8. D. Cardon, Natural dyes. Sources, tradition, technology and science.. Archetype Publications Ltd, 2007
  9. L. Hämet-Ahti, A. Palmén, P. Alanko, and P. Tigerstedt, Suomen puu- ja pensaskasvio. Woody Flora of Finland. Helsinki.. Dendrologian Seura r. y., 1992
  10. M. Piirainen, "Tervaleppä – Alnus glutinosa Ks. Notes," 2020 . [Online]. Available: https://laji.fi/taxon/MX.38008 . [Accessed Jan. 24, 2020].
  11. E. Räty, Viljelykasvien nimistö. Puutarhaliiton julkaisuja nro 376. Helsinki.. Puutarhaliitto, 2017