Date-plum

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Diospyros lotus, with common names date-plum, Caucasian persimmon, or lilac persimmon, is a widely cultivated species of the genus Diospyros, native to temperate Asia and southeast Europe. Its English name derives from the small fruit, which have a taste reminiscent of both plums and dates. It is among the oldest plants in cultivation.

Date-plum
Branches with fruit
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Ericales
Family: Ebenaceae
Genus: Diospyros
Species:
D. lotus
Binomial name
Diospyros lotus
Synonyms[2]
11 Synonyms
  • Dactylus trapezuntinus Forssk. (1775)
  • Diospyros calycina Dippel (1889)
  • D. lotus var. angustifolia Gaudin (1830)
  • D. lotus f. ellipsoidea Makino (1912)
  • D. lotus f. globosa Makino (1912)
  • D. lotus var. laevis H.Ohba & S.Akiyama (2016)
  • D. lotus f. longifolia Zhang (1983)
  • D. lotus var. mollissima C.Y.Wu (1965)
  • D. lotus f. ovoidea Makino (1912)
  • D. mediterranea Oken (1841)
  • D. umlovok Griff. (1848)

Distribution and ecology

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The species area extends from East Asia to the west of the Mediterranean, down to Spain. The date-plum is native to southwest Asia and southeast Europe. It was known to the ancient Greeks as "God's fruit" (Διός πυρός, Diós purós), hence the scientific name of the genus. Its English name probably derives from Persian Khormaloo خرمالو literally "date-plum", referring to the taste of this fruit which is reminiscent of both plums and dates. The fruit is called Amlok املوک in Pakistan and consumed dried. This species is one candidate for the "lotus tree" mentioned in The Odyssey: it was so delicious that those who ate it forgot about returning home and wanted to stay and eat lotus with the lotus-eaters.[3]

The tree grows in the lower and middle mountain zones in the Caucasus. They usually grow up to 600 m (2,000 ft) above sea level. In Central Asia, it rises higher—up to 2,000 m (6,600 ft). They rarely grow in stands but often grow with hackberry, ash, maple and other deciduous species. It is not demanding on the soil and can grow on rocky slopes but requires a well lit environment.[citation needed]

It is cultivated at the limits of its range, as well as in the U.S. and North Africa.[citation needed]

Biological description

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This is a tree of height 15–30 m (49–98 ft) with sloughing of aging bark. The tree will commonly stop growing at 15 m (49 ft), it grows slowly and will spread in a horizontal direction as it matures.[4]

The leaves are shiny, leathery, oval-shaped with pointed ends, 5–15 cm (2.0–5.9 in) long and 3–6 cm (1.2–2.4 in) in width.

The flowers are small, greenish, appearing in June to July. The plant is dioecious, and so obviously not self-fertile.

Fruits are berries with juicy flesh, yellow when ripe, 1–2 cm (0.39–0.79 in) in diameter. Seeds with thin skin and a very hard endosperm. Fruits ripen Oct. to Nov.

Usage

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Caucasian persimmon fruits are edible and contain much sugar, malic acid, and vitamins. They are used as fresh fruits or after frost, but usually dried. Drying and frost destroy their tartness.[citation needed]

References

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  1. ^ Puglisi, C & Schmidt, H (2023). "Diospyros lotus". IUCN Red List of Threatened Species. 2023: e.T63524A3126366. Retrieved 14 February 2024.
  2. ^ a b "Diospyros lotus". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 14 February 2024.
  3. ^ Homer. The Odyssey. Project Gutenberg. p. 76. Retrieved 2007-10-13.
  4. ^ "Date Plums: History, Info, and Description". Farm Plastic Supply. Addison, Illinois. Retrieved 2024-11-03.