'Nadler' oak

Quercus × warei
Kindred Spirit hybrid oak.jpg
Quercus × warei 'Nadler' =

Kindred Spirit

Scientific classification
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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 L. f. fastigiata (Lam.) O. Schwarz (Upright English oak) and Quercus bicolor Willd. (swamp white oak).[1] The hybrid is named for the American dendrologist George Ware, former Research Director at the Morton Arboretum, Illinois.

Cultivars[]

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[]

  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 PP17,604
  3. ^ U.S. Patent PP12,673
  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.

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