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Sweet chestnut
The sweet chestnut (Castanea sativa), also known as the Spanish chestnut or European chestnut, is a species of tree in the family Fagaceae, native to Southern Europe and Asia Minor, and widely cultivated throughout the temperate world. A substantial, long-lived deciduous tree, it produces an edible seed, the chestnut, which has been used in cooking since ancient times.
Castanea sativa attains a height of 20–35 metres (66–115 feet) with a trunk often 2 m (7 ft) in diameter. Around 20 trees are recorded with diameters over 4 m (13 ft) including one 7.5 m (25 ft) in diameter at breast height. A famous ancient tree known as the Hundred Horse Chestnut in Sicily was historically recorded at 18 m (59 ft) in diameter (although it has split into multiple trunks above ground). The bark often has a net-shaped (retiform) pattern with deep furrows or fissures running spirally in both directions up the trunk. The trunk is mostly straight with branching starting at low heights. The oblong-lanceolate, boldly toothed leaves are 16–28 centimetres (6–11 inches) long and 5–9 cm (2–4 in) broad.[citation needed]
The flowers of both sexes are borne in 10–20 cm (4–8 in) long, upright catkins, the male flowers in the upper part and female flowers in the lower part. In the Northern Hemisphere, they appear in late June to July, and by autumn, the female flowers develop into spiny cupules containing 3–7 brownish nuts that are shed during October. The female flowers eventually form a spiky sheath that deters predators from the seed. The sweet chestnut is naturally self incompatible, meaning that the plant cannot pollinate itself, making cross-pollination necessary. Some cultivars only produce one large seed per cupule, while others produce up to three seeds. The nut itself is composed of two skins: an external, shiny brown part, and an internal skin adhering to the fruit. Inside, there is an edible, creamy-white part developed from the cotyledons.
Sweet chestnut trees live to an age of 500 to 600 years. In cultivation they may even grow as old as 1,000 years or more.
The tree is to be distinguished from the horse chestnut Aesculus hippocastanum, to which it is only distantly related. The horse chestnut bears superficially similar but inedible seeds (conkers) in a dehiscent seed case. Other common names include "Spanish chestnut" or "marron" (French for "chestnut"). The generic name Castanea is the old Latin name for the plant species, while the specific epithet sativa means "cultivated by humans". Some selected varieties are smaller and more compact in growth yielding earlier in life with different ripening time: the Marigoule, the Marisol and the Maraval.
The species is native to Southern Europe and Asia Minor. It is found across the Mediterranean region, from the Caspian Sea to the Atlantic Ocean. It is thought to have survived the last ice age in several refuges in Southern Europe, on the southern coast of the Black Sea with a main centre on the southern slope of the Caucasus and in the region of north-western Syria, possibly extending into Lebanon.
The species is widely distributed throughout Europe, where in 2004 Castanea sativa was grown on 2,250,000 hectares (5,600,000 acres) of forest, of which 1,780,000 ha (4,400,000 acres) were mainly cultivated for wood and 430,000 ha (1,100,000 acres) for fruit production. In some European countries, C. sativa has only been introduced recently, for example in Slovakia or the Netherlands.
The tree requires a mild climate and adequate moisture for good growth and a good nut harvest. Its year-growth (but not the rest of the tree) is sensitive to late spring and early autumn frosts; it is also intolerant of lime. Under forest conditions, it will tolerate moderate shade well. It can live to more than 2,000 years of age in natural conditions, such as the Hundred Horse Chestnut near Mount Etna in eastern Sicily.[citation needed]
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Sweet chestnut AI simulator
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Sweet chestnut
The sweet chestnut (Castanea sativa), also known as the Spanish chestnut or European chestnut, is a species of tree in the family Fagaceae, native to Southern Europe and Asia Minor, and widely cultivated throughout the temperate world. A substantial, long-lived deciduous tree, it produces an edible seed, the chestnut, which has been used in cooking since ancient times.
Castanea sativa attains a height of 20–35 metres (66–115 feet) with a trunk often 2 m (7 ft) in diameter. Around 20 trees are recorded with diameters over 4 m (13 ft) including one 7.5 m (25 ft) in diameter at breast height. A famous ancient tree known as the Hundred Horse Chestnut in Sicily was historically recorded at 18 m (59 ft) in diameter (although it has split into multiple trunks above ground). The bark often has a net-shaped (retiform) pattern with deep furrows or fissures running spirally in both directions up the trunk. The trunk is mostly straight with branching starting at low heights. The oblong-lanceolate, boldly toothed leaves are 16–28 centimetres (6–11 inches) long and 5–9 cm (2–4 in) broad.[citation needed]
The flowers of both sexes are borne in 10–20 cm (4–8 in) long, upright catkins, the male flowers in the upper part and female flowers in the lower part. In the Northern Hemisphere, they appear in late June to July, and by autumn, the female flowers develop into spiny cupules containing 3–7 brownish nuts that are shed during October. The female flowers eventually form a spiky sheath that deters predators from the seed. The sweet chestnut is naturally self incompatible, meaning that the plant cannot pollinate itself, making cross-pollination necessary. Some cultivars only produce one large seed per cupule, while others produce up to three seeds. The nut itself is composed of two skins: an external, shiny brown part, and an internal skin adhering to the fruit. Inside, there is an edible, creamy-white part developed from the cotyledons.
Sweet chestnut trees live to an age of 500 to 600 years. In cultivation they may even grow as old as 1,000 years or more.
The tree is to be distinguished from the horse chestnut Aesculus hippocastanum, to which it is only distantly related. The horse chestnut bears superficially similar but inedible seeds (conkers) in a dehiscent seed case. Other common names include "Spanish chestnut" or "marron" (French for "chestnut"). The generic name Castanea is the old Latin name for the plant species, while the specific epithet sativa means "cultivated by humans". Some selected varieties are smaller and more compact in growth yielding earlier in life with different ripening time: the Marigoule, the Marisol and the Maraval.
The species is native to Southern Europe and Asia Minor. It is found across the Mediterranean region, from the Caspian Sea to the Atlantic Ocean. It is thought to have survived the last ice age in several refuges in Southern Europe, on the southern coast of the Black Sea with a main centre on the southern slope of the Caucasus and in the region of north-western Syria, possibly extending into Lebanon.
The species is widely distributed throughout Europe, where in 2004 Castanea sativa was grown on 2,250,000 hectares (5,600,000 acres) of forest, of which 1,780,000 ha (4,400,000 acres) were mainly cultivated for wood and 430,000 ha (1,100,000 acres) for fruit production. In some European countries, C. sativa has only been introduced recently, for example in Slovakia or the Netherlands.
The tree requires a mild climate and adequate moisture for good growth and a good nut harvest. Its year-growth (but not the rest of the tree) is sensitive to late spring and early autumn frosts; it is also intolerant of lime. Under forest conditions, it will tolerate moderate shade well. It can live to more than 2,000 years of age in natural conditions, such as the Hundred Horse Chestnut near Mount Etna in eastern Sicily.[citation needed]