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Pterocarya fraxinifolia

Caucasian wingnut

Blatt (CC BY-SA 4.0) A

Short Description

The Caucasian wingnut is generally multi-stemmed, densely leaved and can grow up to 30 m tall.

The very large leaves consist of 11-25 leaflets. These leaflets are elongated to lance-shaped and pointed with a finely serrated margin. They have no stalk and finish with a terminal leaflet (unequally pinnate).

The bark is black-grey with vertical fissures.

The flowers are yellowish-greenish and hang in long “catkins” (flower heads).

The fruits are light-green winged nuts clustered in seed heads.

Features

Caucasian wingnut

Pterocarya fraxinifolia

  • very large pinnate leaves

  • long, greenish, drooping seed heads

weibliche Blüte (CC BY-SA 4.0) A

In the city

Caucasian wingnuts are popular ornamental trees in parks. They are mainly found close to bodies of water.

Fun Facts

  • It flowers from April to May.

  • The fruit ripening season is in October.

  • Endangerment level Germany: not evaluated
  • Usage:

    The wood of the Caucasian wingnut is used in veneering.

  • It is a non-native plant (neophyte).

  • Rubbing the leaves releases a substance poisonous to fish. This is used in fishing.

Fruchtstand (CC BY-SA 4.0) A

Sources

Blatt, A, CC BY-SA 4.0, https://commons.wikimedia.org/wiki/File:Pterocarya_fraxinifolia.JPG

weibliche Blüte, A, CC BY-SA 4.0, https://commons.wikimedia.org/wiki/File:Pterocarya_fraxinifolia_(1).JPG

Fruchtstand, A, CC BY-SA 4.0, https://commons.wikimedia.org/wiki/File:Pterocarya_fraxinifolia_(4).JPG

Aas, G. & Riedmiller, A. (2002) Laubbäume. Bestimmen – Kennenlernen – Schützen, Bindlach: Gondrom Verlag.

Böhlmann, D. (2015) Laubbäume temperierter Klimate mit ihrer Artenvielfalt, Berlin: Patzer Verlag.

Page „Kaukasische Flügelnuss“. : Wikipedia, The Free Encyclopedia. Date of last revision: 15.12.2013, 14:46 UTC. URL: https://de.wikipedia.org/w/index.php?title=Kaukasische_Fl%C3%BCgelnuss&oldid=125465445 (Accessed: 21.04.2016).