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Hybrid clans between Whitebeam and Rowan | ||||
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 Rowan Sorbus aucuparia 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 region 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 in other countries e.g. France, the British Islands, Scandinavia and Eastern European Countries there are hybrid clans. Attributes as the different forms of the parents' leaves, the pubescense of the bottom side of Whitebeam's leaves which Rowan doesn't have, the size and color of the fruits, 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. 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 aucuparia / Rowan Rosaceae / Rose Fam. parent |
Sorbus x pinnatifida / Hybrid Whitebeam = Sorbus aria x aucuparia Rosaceae / Rose Fam. Spontaneous hybrid, found in the Karlsruhe port in 2009, has been removed in between |
Sorbus x pinnatifida / Hybrid Whitebeam = Sorbus aria x aucuparia Rosaceae / Rose Fam. The spontaneous hybrid has been used as base for grafting of the Allegheny Service Berry in the parc 'Rosarium' at Noerdlingen (Ries) ! Sorbus shoots below the grafting location are shown. | ||
Sorbus intermedia / Swedish Whitebeam Rosaceae / Rose Fam. Scandinavia, elsewhere grown in parks |
Sorbus intermedia / Swedish Whitebeam Rosaceae / Rose Fam. Alsace and Southwest Germany, elsewhere grown along roads |
Sorbus austriaca / Austrian Whitebeam Rosaceae / Rose Fam. Botanical Garden of Regensburg / Germany | ||
Sorbus schwarziana / Schwarz' Whitebeam Rosaceae / Rose Fam. Franconia, Frechetsfeld |
Sorbus gauckleri / Gauckler's Whitebeam Rosaceae / Rose Fam. Franconia, Happurg |
Sorbus hohenesteri / Hohenester's Whitebeam Rosaceae / Rose Fam. Franconia, Leutenbach | ||
Not only in the region of Hersbruck, but also further north in Franconia near Weismain, and even in Rheinhessen (Rheinland-Pfalz) north of Alzey there are rather similar regional populations which have come into being hybridogenously from Whitebeam and Rowan. | ||||
Sorbus pseudothuringiaca / Hersbruck Whitebeam Rosaceae / Rose Fam. Franconia, Arzlohe |
Sorbus pseudothuringiaca / Hersbruck Whitebeam Rosaceae / Rose Fam. Franconia, Weismain |
Sorbus pseudothuringiaca / Hersbruck Whitebeam Rosaceae / Rose Fam. Rheinhessen, Bornheim near Alzey | ||
Sorbus pulchra / Goessweinstein Whitebeam Rosaceae / Rose Fam. Franconia, Gößweinstein |
Sorbus harziana / Harz' Whitebeam Rosaceae / Rose Fam. Franconia, Weismain | |||
Sorbus anglica / English Whitebeam Rosaceae / Rose Fam. Ireland, Killarney | ||||
Naturally this list isn't complete. It will be continued on occasion.
Hybrid clans between Whitebeam Sorbus aria and Wild Service Tree Sorbus torminalis you can find here. | ||||
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21-Jan-2021 |
Copyright: Verwendung der Bilder und Texte nur mit schriftlicher Genehmigung des Autors. |
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