Portal:Trees
The Trees Portal
angiosperm
) treeIn
perennial plant with an elongated stem, or trunk, usually supporting branches and leaves. In some usages, the definition of a tree may be narrower, including only woody plants with secondary growth, plants that are usable as lumber or plants above a specified height. In wider definitions, the taller palms, tree ferns, bananas, and bamboos
are also trees.
Trees are not a
angiosperms or hardwoods; of the rest, many are gymnosperms
or softwoods. Trees tend to be long-lived, some reaching several thousand years old. Trees have been in existence for 370 million years. It is estimated that there are around three trillion mature trees in the world.
A tree typically has many secondary branches supported clear of the ground by the trunk, which typically contains
woody tissue for strength, and vascular tissue to carry materials from one part of the tree to another. For most trees it is surrounded by a layer of bark which serves as a protective barrier. Below the ground, the roots branch and spread out widely; they serve to anchor the tree and extract moisture and nutrients from the soil. Above ground, the branches divide into smaller branches and shoots. The shoots typically bear leaves, which capture light energy and convert it into sugars by photosynthesis
, providing the food for the tree's growth and development.
Trees usually reproduce using seeds. Flowers and fruit may be present, but some trees, such as conifers, instead have pollen cones and seed cones. Palms, bananas, and bamboos also produce seeds, but tree ferns produce spores instead.
Trees play a significant role in reducing
mythologies. (Full article...
)
Recognized content - 
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Durio (most notably Durio dulcis) have a strong scent, the red-fleshed type of D. graveolens has a mild scent. It is native to Southeast Asia.
congener Durio zibethinus is the typical species eaten and dominates sales worldwide. (Full article...
)Did you know? -
- ... that the Top 10 New Species of the past year include a 40 foot (12 m) tall tree (pictured), a crustacean that looks like a skeleton, a protist that acts like a sponge, and a fungus named after the King of the Netherlands?
- ... that the Pass Christian Light was deactivated in part because neighboring property owners refused to trim their trees?
- ... that Cossinia trifoliata trees endemic to New Caledonia have become vulnerable to extinction, according to the International Union for Conservation of Nature's 1998 assessment?
- ... that the Hanlon Expressway is named after Felix Hanlon, who helped cut the first tree to inaugurate Guelph, Ontario?
- ... that British architect Richard Feilden was killed by a falling tree whilst creating a woodland memorial for his recently deceased father?
- ... that according to tradition the Church of the Holy Archangels, Rogoz was built from two huge elm trees?
- ... that Faust's Walpurgis Night scene stood inside Buchenwald concentration camp and was sketched by French Volontaires de la Liberté member and camp inmate Léon Delarbre?
Selected article -
Sierra Nevada mountain range of California but are grown around the world.
General images
The following are images from various tree-related articles on Wikipedia.
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Spiny forest at Ifaty, Madagascar, featuring various Adansonia (baobab) species, Alluaudia procera (Madagascar ocotillo) and other vegetation (from Forest) -
A youngred pine (Pinus resinosa) with spread of roots visible, as a result of soil erosion (from Tree) -
CrackedAesculus tree seed (from Tree) -
lycophyte tree (from Tree) -
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A section ofheartwood (from Tree) -
Share of land that is covered by forest (from Forest) -
Form, leaves and reproductive structures of queen sago (Cycas circinalis) (from Tree) -
The Amazon rainforest alongside the Solimões River, a tropical rainforest. These forests are the most biodiverse and productive ecosystems in the world. (from Forest) -
Wind dispersed seed of elm (Acer) (from Tree) -
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Rowan tree in Wicklow, Ireland (from List of trees of Great Britain and Ireland) -
Buds, leaves and reproductive structures of white fir (Abies alba) (from Tree) -
Conifers in the Swabian alps (from Tree) -
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TheGeneral Sherman Tree, thought to be the world's largest by volume (from Tree) -
Proportion and distribution of global forest area by climatic domain, 2020 (from Forest) -
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Neem tree at Sant Nenuram Ashram (from Trees of Pakistan) -
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Tallherbaceous monocotyledonous plants such as banana lack secondary growth, but are trees under the broadest definition. (from Tree) -
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Since the 13th century, the Niepołomice Forest in Poland has had special use and protection. In this view from space, different coloration can indicate different functions. (from Forest) -
Share of forest area in total land area, top countries (2021) (from Forest) -
The Daintree Rainforest (from Tree) -
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4000 years oldCypress of Abarqu is the oldest tree in Iran and the second oldest tree in the world. (from List of trees of Iran) -
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Diagram ofconiferous tree showing idealised vertical and horizontal sections. A new layer of wood is added in each growing season, thickening the stem, existing branches and roots. (from Tree) -
Roof trusses made from softwood (from Tree) -
Common ash (angiosperm) tree (from Tree) -
Priest River winding through Whitetail Butte with lots of forestry to the east—these lot patterns have existed since the mid-19th century. The white patches reflect areas with younger, smaller trees, where winter snow cover shows up brightly to the astronauts. Dark green-brown squares are parcels (from Forest) -
Olive trees in Pakistan (from Trees of Pakistan) -
Buds, leaves, flowers and fruit of oak (Quercus robur) (from Tree) -
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Forest in the Scottish Highlands (from Forest) -
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Even, denseold-growth stand of beech trees (Fagus sylvatica) prepared to be regenerated by their saplings in the understory, in the Brussels part of the Sonian Forest. (from Forest) -
Northern beech (Fagus sylvatica) trunk in autumn (from Tree) -
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Recently stripped cork oak (Quercus suber) (from Tree) -
Selling firewood at a market (from Tree) -
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Proportion of forest in protected areas, by region, 2020 (from Forest) -
World production of selected forest products (from Forest) -
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Palms and cycads as they might have appeared in the middleTertiary (from Tree) -
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Buttress roots of the kapok tree (Ceiba pentandra) (from Tree) -
People trees, by Pooktre (from Tree) -
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