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Hybrid clans between Whitebeam and Wild Service Tree | ||||
Whitebeam Sorbus aria ( as well as the closely related
Hill Whitebeam Sorbus collina in the Franconian Alb resp.
Tauber Whitebeam Sorbus dubronensis in the Tauber region ) are able to generate hybrids
with the Wild Service Tree Sorbus torminalis if they occur together.
In several regions such hybrids have developed to stabilized and hereditary-stable hybrid clans,
with different appearance in different regions although they have the same parents.
In their regions they form smaller or bigger populations, which botanists today are treating as closely related species.
In Germany a cumulation of such hybrid clans can be observed in parts of Franconia together with adjacent regions of Bavaria around Regensburg, of Baden-Württemberg in the Tauber region, and of Thuringe. But also in other countries as e.g. France, the British Islands, Scandinavia and Eastern European Countries there are hybrid clans between Whitebeam and Wild Service Tree. Attributes as the different forms of the parents' leaves, the pubescense of the bottom side of Whitebeam's leaves which the Wild Service Tree doesn't have, the figure of the tree, and more attributes of the parents are intermediate in any way at the hybrid clans, but more or less different at each of them. In the spring the leaves of many clans have a slight pilosity also at the top side, a heritage of Whitebeam, which they loose during the summer, when the leaves become more coriaceous. The hybrid clans of which I have already taken photos are presented by showing the different forms of their leaves. | ||||
Sorbus aria / Whitebeam Rosaceae / Rose Fam. parent |
Sorbus collina / Hill Whitebeam Rosaceae / Rose Fam. parent |
Sorbus dubronensis / Tauber Whitebeam Rosaceae / Rose Fam. parent | ||
Sorbus torminalis / Wild Service Tree Rosaceae / Rose Fam. parent |
Sorbus latifolia s.l. / Broad-Leaved European Mountain-Ash Rosaceae / Rose Fam. Weinheim an der Bergstraße |
Sorbus latifolia s.l. / Broad-Leaved European Mountain-Ash Rosaceae / Rose Fam. Idar-Oberstein | ||
The Broad-Leaved European Mountain-Ash in narrow sense comes from the region around Paris, elsewhere it is also grown in parks. The Broad-Leaved European Mountain-Ashes from the Nahe / Hunsrueck / Rheinhessen region haven't got own names (yet), but it seems that they are not unique, but seem to have developed at several places. The leaf forms of some of these are closer to the type population from Paris than the one from a garden at Weinheim shown above in the middle. | ||||
Sorbus moenofranconica / Main-Franconian Whitebeam Rosaceae / Rose Fam. Erlenbach near Marktheidenfeld |
Sorbus meyeri / Meyer's Whitebeam Rosaceae / Rose Fam. Tauber Region, Kuelsheim |
Sorbus koksensis / Koks Whitebeam Rosaceae / Rose Fam. Tauber Region, Kuelsheim | ||
Sorbus badensis / Baden Whitebeam Rosaceae / Rose Fam. Tauber Region, Koenigheim |
Sorbus seyboldiana / Seybold's Whitebeam Rosaceae / Rose Fam. Tauber Region, Werbachhausen |
Sorbus puellarum / Girlish Whitebeam Rosaceae / Rose Fam. Franconia, Uettingen | ||
Sorbus haesitans / Thuengersheim Whitebeam Rosaceae / Rose Fam. Franconia, Thuengersheim |
Sorbus x vagensis / Hybrid Service Tree Rosaceae / Rose Fam. Franconia, Leinach NW Wuerzburg |
Sorbus perlonga / Long-Leaved Whitebeam Rosaceae / Rose Fam. Franconia, Leinach NW Wuerzburg | ||
Sorbus herbipolitana / Wuerzburg Whitebeam Rosaceae / Rose Fam. Franconia, Guentersleben near Wuerzburg |
Sorbus cochleariformis / Spoon-Leaved Whitebeam Rosaceae / Rose Fam. Franconia, Untererthal |
Sorbus schnizleiniana / Schnizlein's Whitebeam Rosaceae / Rose Fam. Franconia, Neukirchen | ||
Sorbus adeana / Ade's Whitebeam Rosaceae / Rose Fam. Franconian Alb, Weismain |
Sorbus cordigastensis / Kordigast Whitebeam Rosaceae / Rose Fam. Franconian Alb, Weismain, Großer Kordigast |
Sorbus franconica / Franconian Whitebeam Rosaceae / Rose Fam. Franconia, Ebermannstadt | ||
Sorbus meierottii / Wellheim Whitebeam Rosaceae / Rose Fam. Wellheim in Urdonau Valley |
Sorbus eystettensis / Eichstaett Whitebeam Rosaceae / Rose Fam. Eichstaett |
Sorbus schuwerkiorum / Schuwerk's Whitebeam Rosaceae / Rose Fam. Greding | ||
Sorbus ratisbonensis / Regensburg Whitebeam Rosaceae / Rose Fam. Undorf near Regensburg |
Sorbus mergenthaleriana / Mergenthaler's Whitebeam Rosaceae / Rose Fam. Etterzhausen near Regensburg |
Sorbus hoppeana / Hoppe's Whitebeam Rosaceae / Rose Fam. Krachenhausen near Kallmuenz | ||
Sorbus fischeri / Ries Whitebeam Rosaceae / Rose Fam. Noerdlinger Ries, Harburg in Schwaben | ||||
Sorbus acutisecta / Acute-Lobate Whitebeam Rosaceae / Rose Fam. Hessen, Treffurt |
Sorbus isenacensis / Eisenach Whitebeam Rosaceae / Rose Fam. Thuringe, Eisenach |
Sorbus x decipiens / Sharp-Toothed Whitebeam Rosaceae / Rose Fam. Thuringe, Waltershausen | ||
Sorbus multicrenata / Many-Scored Whitebeam Rosaceae / Rose Fam. Thuringe, Bad Blankenburg |
Sorbus subcordata / Arnstadt Whitebeam Rosaceae / Rose Fam. Thuringe, Arnstadt |
Sorbus heilingensis / Heilingen Whitebeam Rosaceae / Rose Fam. Thuringe, Kleinbucha | ||
Naturally this list isn't complete. It will be continued on occasion.
The botanical garden of the University of Regensburg grows a remarkable collection not only of Sorbus trees, but also of other members of the Rose family, mainly Brambles, Hawthorns and native Roses. Hybrid clans between Whitebeam Sorbus aria and Rowan Sorbus aucuparia you can find here. | ||||
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Contents
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Orchids
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Other Plants
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Plants acc. to Families
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.. Relationship:
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APG
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trad.
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.. Scientific Names
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.. German Names
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.. English Names
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.. Bloom Colors
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.. Flower Anatomy
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.. Leaf Form
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.. Regions
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.. Photo Month
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.. Fruits + Seed
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.. Roots + Bulbs
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Pest Infestation + Deformations
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Trees
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Bushes
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Water Plants
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Climbers + Twiners
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Useful Pl.
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Ornamental Pl.
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Color Var.
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Multiple Criteria
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Biotopes + Groups
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Botan.Links
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21-Jan-2021 |
Copyright: Use of the images and texts only with the author's written permission. |