Deceptive bastard whitebeam

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Deceptive bastard whitebeam
Systematics
Eurosiden I
Order : Rose-like (rosales)
Family : Rose family (Rosaceae)
Sub tribus : Pome fruit family (Pyrinae)
Genre : White berries ( sorbus )
Type : Deceptive bastard whitebeam
Scientific name
Sorbus decipiens
( Bechstein ) Irmisch ex Petz. & Kirchn.

The deceptive bastard whitebeam ( Sorbus decipiens ), also known as the deceptive whitebeam , is a species from the complex of bastard whitebeam ( Sorbus latifolia agg.).

description

The deceptive bastard whitebeam is a tree up to 10 (rarely up to 20) meters high . The leaves are broadly ovate and measure 7 to 9 × 5 to 7 centimeters. Its widest point is below the middle. They have 4 to 5 pairs of triangular and fairly short lobes and 9 to 11 pairs of lateral nerves. The underside has a brownish-yellow hair, but balding in places, especially on the nerves. In autumn they are quite coarse, coarse and sharply cut. The elongated fruits are 12 millimeters thick and 14 to 16 millimeters long.

distribution

This species is endemic to the shell limestone soils on Burgberg near Waltershausen in the Gotha district in Thuringia . Presumably, the climatic and geological isolation of the castle hill is the reason that this clan is not spreading any further.

Systematics

The deceptive bastard whitebeam was first described by Bechstein as Pyrus decipiens in 1810 . The classification in the genus Sorbus took place in 1864 by Irmisch. Today's conception of species goes back to the work of Düll in 1961. In the meantime, the species was defined more broadly, Irmisch also included the clans from Arnstadt under the name Sorbus decipiens and Hedlund even clans from England and France in 1901, the information in the Flora Europaea about occurrences in France can probably be traced back to a similar understanding of this species.

Danger

At the time of the first description by Bechstein, there were still over 100 copies of the Deceptive Bastard whitebeam. There are now 40 trees on the south and south-west slopes as well as a few more on the top and on the west slope.

Individual evidence

  1. ↑ a b c d e Herfried Kutzelnigg: Sorbus . In: Hans. J. Conert et al. a. (Ed.): Gustav Hegi. Illustrated flora of Central Europe. Volume 4 Part 2B: Spermatophyta: Angiospermae: Dicotyledones 2 (3). Rosaceae 2 . Blackwell 1995. ISBN 3-8263-3014-5

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