''Quercus'' × ''warei'' is a

hybrid Hybrid may refer to: Science * Hybrid (biology), an offspring resulting from cross-breeding ** Hybrid grape, grape varieties produced by cross-breeding two ''Vitis'' species ** Hybridity, the property of a hybrid plant which is a union of two dif ...

oak tree in the genus ''

Quercus An oak is a tree or shrub in the genus ''Quercus'' (; Latin "oak tree") of the beech family, Fagaceae. There are approximately 500 extant species of oaks. The common name "oak" also appears in the names of species in related genera, notably '' ...

''. The tree is a hybrid of ''

Quercus robur ''Quercus robur'', commonly known as common oak, pedunculate oak, European oak or English oak, is a species of flowering plant in the beech and oak family, Fagaceae. It is a large tree, native plant, native to most of Europe west of the Caucasus ...

'' f. ''fastigiata'' (upright English oak) and ''

Quercus bicolor ''Quercus bicolor'', the swamp white oak, is a North American species of medium-sized trees in the beech family. It is a common element of America's north central and northeastern mixed forests. It can survive in a variety of habitats. It forms ...

'' (swamp white oak). The hybrid is named for the American dendrologist George Ware, former Research Director at the

Morton Arboretum The Morton Arboretum, in Lisle, Illinois, United States, is a public garden, and outdoor museum with a library, herbarium, and program in tree research including the Center for Tree Science. Its grounds, covering 1,700 acres (6.9 square kilometres ...

in Illinois.

Cultivars

Two

cultivar A cultivar is a type of cultivated plant that people have selected for desired traits and when propagated retain those traits. Methods used to propagate cultivars include: division, root and stem cuttings, offsets, grafting, tissue culture, ...

s, 'Long' and 'Nadler' were patented. 'Nadler' was patented and trademarked in 2007. The mother tree of both cultivars is a ''Quercus robur'' f. ''fastigiata'' (upright English oak, a narrow

form Form is the shape, visual appearance, or configuration of an object. In a wider sense, the form is the way something happens. Form also refers to: *Form (document), a document (printed or electronic) with spaces in which to write or enter data ...

) growing in Columbia, Missouri. The

ortet This glossary of botanical terms is a list of definitions of terms and concepts relevant to botany and plants in general. Terms of plant morphology are included here as well as at the more specific Glossary of plant morphology and Glossary o ...

of 'Nadler' is growing in

Jacksonville, Illinois Jacksonville is a city in Morgan County, Illinois, Morgan County, Illinois, United States. The population was 19,446 at the 2010 census. It is the county seat of Morgan County. It is home to Illinois College, Illinois School for the Deaf, and the ...

. 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. The 'Long' cultivar is marketed under the trade designation , and the 'Nadler' cultivar under the trade designation . 'Nadler' oaks are 11 m (35 ft) tall with a limb spread of 2 m (6 ft) at an age of 30 years. 'Nadler' and 'Long' are highly resistant to

powdery mildew Powdery mildew is a fungal disease that affects a wide range of plants. Powdery mildew diseases are caused by many different species of ascomycete fungi in the order Erysiphales. Powdery mildew is one of the easier plant diseases to identify, as ...

, which plagues the ''Q. robur'' parent. This clone also exhibits

heterosis Heterosis, hybrid vigor, or outbreeding enhancement is the improved or increased function of any biological quality in a hybrid offspring. An offspring is heterotic if its traits are enhanced as a result of mixing the genetic contributions of ...

(hybrid vigor). File:Kindred Spirit hybrid oak leaves.jpg, Leaves of a 'Nadler' cultivar File:Kindred Spirit hybrid oak unmature acorns.jpg, Immature

acorn The acorn, or oaknut, is the nut of the oaks and their close relatives (genera ''Quercus'' and '' Lithocarpus'', in the family Fagaceae). It usually contains one seed (occasionally two seeds), enclosed in a tough, leathery shell, and borne ...

s of a 'Nadler' cultivar File:Acorns of Kindred Spirit Hybrid Oak.jpg,

Acorn The acorn, or oaknut, is the nut of the oaks and their close relatives (genera ''Quercus'' and '' Lithocarpus'', in the family Fagaceae). It usually contains one seed (occasionally two seeds), enclosed in a tough, leathery shell, and borne ...

s of a 'Nadler' cultivar File:Kindred Spirit hybrid oak without leaves.jpg, 'Nadler' cultivar without leaves File:Quercus x warei.jpg, In Portsmouth, UK

References

* 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.

External links

Kindred Spirit Additional Info
{{DEFAULTSORT:Quercus warei warei Hybrid plants