Ades whitebeam

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Ades whitebeam
Sorbus adeana 270814.JPG

Ades whitebeam ( Sorbus adeana )

Systematics
Family : Rose family (Rosaceae)
Subfamily : Spiraeoideae
Tribe : Pyreae
Sub tribus : Pome fruit family (Pyrinae)
Genre : White berries ( sorbus )
Type : Ades whitebeam
Scientific name
Sorbus adeana
N.Mey.

Ades whitebeam ( Sorbus adeana ) is a species of plant that belongs to the complex of bastard whitebeam ( Sorbus latifolia agg.) Within the rose family (Rosaceae). This deciduous tree is from a hybridization of Real whitebeam ( Sorbus aria ) with the wild service tree ( Sorbus torminalis originated). As an agamosperm species, it reproduces asexually. It occurs as a local endemic only in Bärental and in the neighboring Kleinziegenfelder Tal in Upper Franconia ( Bavaria , Germany).

Sennikov and Kurtto have been running the species under the name Karpatiosorbus adeana since 2017 .

description

The Ades whitebeam is a deciduous, i.e. deciduous tree . The leaves are oval in shape and have pronounced, deep, slightly spreading teeth. The sheet sizes vary between lengths of 6 to 8 and widths of 5 to 6 cm; the short side of the lobes is mostly over 1 cm long. The blade base angle is usually less than 90 °. There are about eight pairs of nerves per leaf. (See also leaf shape ) In early autumn the false fruits ripen . These are short, pear-shaped, yellowish apple fruits with red-orange cheeks. Reproduction happens with seeds that are produced without sexual processes, this type of plant is therefore agamosperm .

Discovery and naming

Like the closely related Kordigast whitebeam, Ades whitebeam was discovered in the 1990s by the biologist Norbert Meyer , who specializes in whitebeam species , and named it after the botanist Alfred Ade . Ade worked in the Weismainer area at the beginning of the 20th century and was the first to describe the local flora in detail.

Occurrence and endangerment

Ades whitebeam is a local endeavor in Bärental and in the neighboring Kleinziegenfelder Tal . It grows exclusively in the local beech forests, on the numerous protruding rocks and on fallow grassland.

Due to its small distribution area, it is quite rare overall, but is perceived by the Federal Species Protection Ordinance as not endangered and accordingly not particularly protected. With regard to Upper Franconia, it is considered to be potentially at risk based on its frequency . Within Germany, Bavaria has sole responsibility for protecting the species.

Individual evidence

  1. ^ Sorbus adeana N. Mey. ( Memento from February 17, 2013 in the web archive archive.today )
  2. a b c d e f key to "Sorbus in Bavaria" (N. Meyer, L. Meierott, H. Schuwerk & O. Angerer) , open-naturfuehrer.de, accessed on December 30, 2012
  3. a b c d List of plants of global or nationwide importance in the Upper Franconia administrative region , regierung.oberfranken.bayern.de, accessed on December 30, 2012
  4. Erich Walter: Mountain and Village - Kordigast and Burkheim . Government of Upper Franconia, Bayreuth, 1999, pp. 32–42
  5. a b Short profile of the Kordigast whitebeam , flora-oberfranken.de, accessed on December 30, 2012
  6. Ades whitebeam. In: FloraWeb.de.

A. Sennikov, A. Kurtto: A phylogenetic checklist of Sorbus s. l. (Rosaceae) in Europe. In: Memoranda Soc. Fauna Flora Fennica 93, Helsinki 2017, pages 1-78. https://journal.fi/msff/article/view/64741

Web links

Commons : Ades whitebeam ( Sorbus adeana )  - album with pictures, videos and audio files