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Male flowers Seeds of Fraxinus excelsior, popularly known as "keys" or "helicopter seeds", are a type of fruit known as a samara. It is a large deciduous tree growing to 12–18 m (39–59 ft) (exceptionally to 43 m or 141 ft) tall with a trunk up to 2 m (6.6 ft) (exceptionally to 3.5 m or 11 ft) diameter, with a tall, narrow crown. [2]
An endemic species is a plant only native to a certain area. Outside this area, unless spread naturally it is considered non-native, usually as a result of cultivation. Britain and Ireland have few endemic trees, most being micro-species of Whitebeam. But there are some interesting endemic trees nevertheless.
List of oldest trees in the UK Tree name Species Age and location References and notes Fortingall Yew: European Yew (Taxus baccata) 5000 Fortingall, Perthshire: The Fortingall Yew has long been considered the oldest tree in the UK due to its former enormous size and the slow-growing nature of yews.
European ash in flower Narrow-leafed ash (Fraxinus angustifolia) shoot with leaves. Fraxinus (/ ˈ f r æ k s ɪ n ə s /), commonly called ash, is a genus of plants in the olive and lilac family, Oleaceae, [4] and comprises 45–65 species of usually medium-to-large trees, most of which are deciduous trees, although some subtropical species are evergreen trees.
Identification keys are sometimes also referred to as artificial keys to differential them from other diagrams that visualize a classification schemes, often in the form of a key or tree structure. These diagrams are called natural keys or synopses and are not used for identifying specimens. In contrast, an artificial identification key is a ...
The Tree Register, or more fully, the Tree Register of the British Isles (T.R.O.B.I.), is a registered charity [2] run by volunteers, collating and updating a database of notable trees throughout Britain and Ireland. It comprises a computer database which in 2022 contained details of 250,000 trees.
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Status key: * indicates an introduced species and e indicates an extinct species. Species list. Family Pinaceae (pines) Scots pine (Pinus sylvestris) English name