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Quercus × warei

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Quercus × warei
Quercus × warei 'Nadler' = Kindred Spirit
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fagales
Family: Fagaceae
Genus: Quercus
Subgenus: Quercus subg. Quercus
Section: Quercus sect. Quercus
Species:
Q. × warei
Binomial name
Quercus × warei
T.L.Green & W.J.Hess

Quercus × warei is a hybrid oak tree in the genus Quercus. The tree is a hybrid of Quercus robur f. fastigiata (upright English oak) and Quercus bicolor (swamp white oak).[1] The hybrid is named for the American dendrologist George Ware, former Research Director at the Morton Arboretum in Illinois.

Cultivars

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Two cultivars, 'Long' and 'Nadler' were patented.[2][3] 'Nadler' was patented and trademarked in 2007. The mother tree of both cultivars is a Quercus robur f. fastigiata[2] (upright English oak, a narrow form) growing in Columbia, Missouri. The ortet of 'Nadler' is growing in Jacksonville, Illinois.[2] Approximately 1000 seeds were collected from the mother plant in 1974 and propagated, with two selected for further development as cultivars, which are now propagated clonally.[2]

The 'Long' cultivar is marketed under the trade designation Regal Prince,[4] and the 'Nadler' cultivar under the trade designation Kindred Spirit.[5] 'Nadler' oaks are 11 m (35 ft) tall with a limb spread of 2 m (6 ft) at an age of 30 years.[2] 'Nadler' and 'Long' are highly resistant to powdery mildew,[2] which plagues the Q. robur parent. This clone also exhibits heterosis (hybrid vigor).[2]

References

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  1. ^ Trehan, P. "Report from the Oak ICRA checklist Full Name: - Quercus 'Warei'". The Oak Names Checklist. International Oak Society. Retrieved 30 January 2013.
  2. ^ a b c d e f g U.S. patent PP17604
  3. ^ U.S. patent PP12673
  4. ^ Trehan, P. "Report from the Oak ICRA checklist Full Name: - Quercus ×warei 'Long'". The Oak Names Checklist. International Oak Society. Retrieved 30 January 2013.
  5. ^ Trehan, P. "Report from the Oak ICRA checklist Full Name: - Quercus ×warei 'Nadler'". The Oak Names Checklist. International Oak Society. Retrieved 30 January 2013.
  • Dirr, Michael A. 2009. Manual of woody landscape plants: Their identification, ornamental characteristics, culture, propagation and uses. 6th edition. Stipes Publishing Co. Champaign, Illinois. pp. 933
  • Growing Trends: The Official Publication of the Illinois Green Industry Association. "Landscape Architects Meet Heritage Trees... Heritage Trees Meet Some Landscape Architects." July 2007, pp. 16, 19
  • 2008–2009 Catalog of Robinson Nursery Inc.
  • 2009–2010 Catalog of Heritage Seedlings Inc., KCK Farms LLC, Kuenzi Turf and Nursery, Robinson Nursery Inc. and Seseter Farms.
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