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Fam.: Berberidaceae / Barberry Fam.      

Hybrid formula (parents):  Mahonia aquifolium  (PURSH) NUTT.  x  Mahonia pinnata  (LAG.) FEDDE
Synon.:  Berberis x wagneri  Hort. ex KOEHNE

Genus:  Mahonia  NUTT.,  Berberis  L.
 

Authors:
   JOUIN:  E. Jouin (fl. 1910), director of the tree nursery Freres Simon-Louis a Plantieres-les-Metz (France)
   REHDER:  Alfred Rehder (1863 - 1949), German-American botanist
   LAG.:  Mariano Lagasca y Segura (1776 - 1839), Spanish physician and botanist
   FEDDE:  Friedrich Karl Georg Fedde (1873 - 1942), German botanist in Silesia
   PURSH:  Frederick Traugott Pursh (1774 - 1820), American botanist of German descent
   NUTT.:  Thomas Nuttall (1786 - 1859), English botanist
   Hort.:   hortulanorum = name coined by gardeners but never properly published
   KOEHNE:  Bernhard Adalbert Emil Koehne (1848 - 1918), German botanist
   L.:  Carl von Linné (Linnaeus, 1707 - 1777), Swedish naturalist who introduced the binary naming system for plants and animals
 

Etymology:
   Mahonia:   Bernard McMahon (1775 - 1816), American gardener
   wagneri:   Wagner, a gardener?
   aquifolium:   holly-leaved
   pinnata:   pinnate
   Berberis:   from the Arabic name of the fruit
 

Mahonia x wagneri is a horticultural hybrid that originated in Europe. The parents are both from North America, but from completely different regions: The Oregon Grape Mahonia aquifolium originates from the Northwest, from the US State of Oregon to Canada, while the Shinyleaf Mahonia  Mahonia pinnata is native in California in the southwestern United States, so that natural hybrids could not arise.
The parents: Mahonia aquifolium is typically about 1 meter tall (it can reach a maximum of 2 meters) with leaves consisting of 5 to 9 thin leathery leaflets. M. pinnata is taller with thick leathery but smaller leaflets, of which 7 to 13 form a leaf. The yellow flower color of M. pinnata is lighter than that of Mahonia aquifolium.

 

Mahonia x wagneri / Wagner's Oregon Grape, D Viernheim 22.2.2022
Fig. 1:  Mahonia x wagneri / Wagner's Oregon Grape
D Viernheim 22.2.2022
Mahonia x wagneri / Wagner's Oregon Grape, D Viernheim 22.2.2022
Fig. 2:  Mahonia x wagneri / Wagner's Oregon Grape [13 Blättchen / 13 leaflets]
D Viernheim 22.2.2022
Mahonia x wagneri / Wagner's Oregon Grape, D Viernheim 22.2.2022
Fig. 3:  Mahonia x wagneri / Wagner's Oregon Grape
D Viernheim 22.2.2022
Mahonia x wagneri / Wagner's Oregon Grape, D Viernheim 9.2.2022
Fig. 4:  Mahonia x wagneri / Wagner's Oregon Grape
D Viernheim 9.2.2022
Mahonia x wagneri / Wagner's Oregon Grape, D Viernheim 9.2.2022
Fig. 5:  Mahonia x wagneri / Wagner's Oregon Grape [11 Blättchen / 11 leaflets]
D Viernheim 9.2.2022
Mahonia x wagneri / Wagner's Oregon Grape, D Viernheim 22.2.2022
Fig. 6:  Mahonia x wagneri / Wagner's Oregon Grape
D Viernheim 22.2.2022
Mahonia x wagneri / Wagner's Oregon Grape, D Viernheim 22.2.2022
Fig. 7:  Mahonia x wagneri / Wagner's Oregon Grape (upper side)
D Viernheim 22.2.2022
Mahonia x wagneri / Wagner's Oregon Grape, D Viernheim 22.2.2022
Fig. 8:  Mahonia x wagneri / Wagner's Oregon Grape (bottom side)
D Viernheim 22.2.2022
Mahonia x wagneri / Wagner's Oregon Grape, D Viernheim 22.2.2022
Fig. 9:  Mahonia x wagneri / Wagner's Oregon Grape (side leaflet)
D Viernheim 22.2.2022
Mahonia x wagneri / Wagner's Oregon Grape, D Viernheim 28.3.2022
Fig. 10:  Mahonia x wagneri / Wagner's Oregon Grape
D Viernheim 28.3.2022
Mahonia x wagneri / Wagner's Oregon Grape, D Viernheim 28.3.2022
Fig. 11:  Mahonia x wagneri / Wagner's Oregon Grape
D Viernheim 28.3.2022
Mahonia x wagneri / Wagner's Oregon Grape, D Viernheim 28.3.2022
Fig. 12:  Mahonia x wagneri / Wagner's Oregon Grape
D Viernheim 28.3.2022
Mahonia x wagneri / Wagner's Oregon Grape, D Viernheim 28.3.2022
Fig. 13:  Mahonia x wagneri / Wagner's Oregon Grape
D Viernheim 28.3.2022
Mahonia x wagneri / Wagner's Oregon Grape, D Viernheim 28.3.2022
Fig. 14:  Mahonia x wagneri / Wagner's Oregon Grape
D Viernheim 28.3.2022
Mahonia x wagneri / Wagner's Oregon Grape, D Viernheim 21.5.2022
Fig. 15:  Mahonia x wagneri / Wagner's Oregon Grape
D Viernheim 21.5.2022
Mahonia x wagneri / Wagner's Oregon Grape, D Viernheim 21.5.2022
Fig. 16:  Mahonia x wagneri / Wagner's Oregon Grape
D Viernheim 21.5.2022
Mahonia x wagneri / Wagner's Oregon Grape, D Viernheim 16.6.2022
Fig. 17:  Mahonia x wagneri / Wagner's Oregon Grape
D Viernheim 16.6.2022
Mahonia x wagneri / Wagner's Oregon Grape, D Viernheim 16.6.2022
Fig. 18:  Mahonia x wagneri / Wagner's Oregon Grape
D Viernheim 16.6.2022
Mahonia x wagneri / Wagner's Oregon Grape, D Viernheim 3.5.2018
Fig. 19:  Mahonia x wagneri / Wagner's Oregon Grape (young plant)
D Viernheim 3.5.2018
Mahonia x wagneri / Wagner's Oregon Grape, D Viernheim 3.5.2018
Fig. 20:  Mahonia x wagneri / Wagner's Oregon Grape (young plant)
D Viernheim 3.5.2018
Mahonia x wagneri / Wagner's Oregon Grape, D Mannheim,  Friesenheimer Insel 28.3.2022
Fig. 21:  Mahonia x wagneri / Wagner's Oregon Grape
D Mannheim, Friesenheimer Insel 28.3.2022
Mahonia x wagneri / Wagner's Oregon Grape, D Mannheim,  Friesenheimer Insel 28.3.2022
Fig. 22:  Mahonia x wagneri / Wagner's Oregon Grape
D Mannheim, Friesenheimer Insel 28.3.2022
Mahonia x wagneri / Wagner's Oregon Grape, D Mannheim,  Friesenheimer Insel 4.3.2022
Fig. 23:  Mahonia x wagneri / Wagner's Oregon Grape
D Mannheim, Friesenheimer Insel 4.3.2022

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