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    Home»Fruits»Facts about Kei Apple
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    Facts about Kei Apple

    By SylviaJanuary 13, 2020Updated:January 13, 2020No Comments7 Mins Read
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    Kei apple plant, botanically known as part of Dovyalis caffra or Iberia caffra is a sub-tropical, evergreen fruit tree or shrub, and a member of the Flacourtiaceae or Placourtia family. Botanically speaking it is a berry though appearance-wise it looks more like an apricot and flavor-wise compared to citrus as a result of its high acidity. The plant is native to southern region of Africa including Malawi, Mozambique, Swaziland and Zimbabwe. Its distribution extends from the Kei River in the south, from which the common name derives, northwards along the eastern side of the continent to Tanzania. Some of the popular common names of the plant are Kei apple, Putukila, Umqokolo, Umkokola, kau apple, Kayaba, Wild Apricot and Kai apple.

    The name ‘Dovyalis’ is based on the Greek word for ‘spear’ and ‘caffra’ comes from Kaffraria (Eastern Cape, South Africa). When not in flower or fruit, this species is sometimes confused with D. zeyheri. It is grown as a coastal hedge and ornamental in southern California and the Mediterranean and for the fruit, it provides in parts of Africa. Its popularity as a fresh eating fruit is limited due to its highly acidic flavor and as a result of the plants thorns which make it difficult to harvest. These thorns do however make it ideal for use as a natural fence capable of providing a barrier for protection from wild animals and intruders. As a coastal hedge, it additionally aids in the prevention of Cliffside erosion and desertification.

    Kei Apple Facts

    Kei apple Quick Facts
    Name: Kei apple
    Scientific Name: Dovyalis caffra
    Origin Southern region of Africa including Malawi, Mozambique, Swaziland and Zimbabwe
    Colors Turns from green to yellow-orange with a velvety surface when ripe
    Shapes Fleshy fruit almost spherical and up to 6 cm in diameter
    Taste Tasty, reminiscent of a small apple
    Name Kei apple
    Scientific Name Dovyalis caffra
    Native Southern region of Africa including Malawi, Mozambique, Swaziland and Zimbabwe
    Common Names Kei apple, Putukila, Umqokolo, kau apple, Wild Apricot, Kai apple
    Name in Other Languages Afrikaans: Kei-appel
    Arabic: Ramihat janub ‘afriqia ( رامحة جنوب أفريقية)
    Dutch: Kei-appel
    English: Kei apple, Putukila, Umqokolo, kau apple, Wild Apricot, Kai apple
    German: Keiapfel
    Japanese: Keiappuru (ケイアップル)
    Philippines: Umkolo
    Russian: Kafrskaya sliva (Кафрская слива)
    Shona: Munhungura, Munhunguru, Musvisvirondo, Mutsvoritoto, Mutsvoritsvoto
    Spanish: Manzana cafre, umkokolo
    Swahili: Umkokolo
    Plant Growth Habit Spiny, attractive, evergreen small to medium-sized shrub or small tree
    Growing Climates Occurs in open bush, wooded grassland, mixed scrub, riverine bush, open woodland, forest, valley bushveld, dry areas and on forest edges
    Soil Does well in almost any soil that does not have a high water table. It is extremely drought-resistant and tolerates saline soil and salt spray and is accordingly valued as a coastal hedge in the Mediterranean region and in California
    Plant Size 30 ft. (9 m) with a spread of 25 ft. (7.5 m)
    Bark Smooth bark is grey on young branches, though fissured and flaky to corky on old branches and stems
    Branches Young branches are heavily armed with long (4-7 cm) spines, but the stem has few spines
    Leaf Simple leaves occur in tight clusters on dwarf lateral branches and alternate on young shoots. Each leaf is obovate 2-5.5 cm by 0.5-3 cm with a rounded apex and tapering base on 5 mm-long petioles
    Flower Small creamish-green flowers occur in dense clusters. The male flowers are 3 mm long in dense clusters of five to 10, while the female flowers are solitary or occur in groups of up to three on stalks 4-10 mm long in the leaf axils
    Fruit Shape & Size Fleshy fruit is almost spherical and up to 6 cm in diameter
    Fruit Color Skin turns from green to yellow-orange with a velvety surface when ripe
    Propagation By seed or cuttings
    Taste Tasty, reminiscent of a small apple
    Season August to October

    Plant Description

    Kei apple is a spiny, attractive, evergreen small to medium-sized shrub or small tree that grows about 30 ft. (9 m) tall with a spread of 25 ft. (7.5 m) and usually has many sharp spines 1 to 3 in (2.5-7.5 cm) long, though it is often entirely spineless if not trimmed. Buds at the base of the spine produce clusters of alternately arranged simple ovate leaves 3–6 cm long. The plant is found growing in open bush, wooded grassland, mixed scrub, riverine bush, open woodland, forest, valley bushveld, dry areas and on forest edges. The plant does best in almost any soil that does not have a high water table. It is extremely drought-resistant and tolerates saline soil and salt spray and is hence valued as a coastal hedge in the Mediterranean region and in California. The smooth bark is grey on young branches, though fissured and flaky to corky on old branches and stems. Young branches are heavily armed with long (4-7 cm) spines, but the stem has few spines.

    Kei apple Image Gallery
    Bark-of-Kei-apple Bark-of-Kei-apple
    Flowers-of-Kei-apple Flowers-of-Kei-apple
    Half-cut-kei-apple Half-cut-kei-apple
    Kei-apple-tree Kei-apple-tree
    Leaves-of-Kei-apple Leaves-of-Kei-apple
    Plant-Illustration-of-Kei-apple Plant-Illustration-of-Kei-apple
    Ripe-fruit-of-Kei-apple Ripe-fruit-of-Kei-apple
    Ripe-Kei-apple-on-the-tree Ripe-Kei-apple-on-the-tree
    Sketch-of-Kei-apple Sketch-of-Kei-apple
    Thorns-of-Kei-apple Thorns-of-Kei-apple
    Trunk-of-Kei-apple Trunk-of-Kei-apple
    Unripe-fruits-on-the-tree
    Leaves

    Leaves often fasciculate on short side-branches; lamina is  2–5.5  cm long and 0.5–2.7 cm wide, narrowly obovate, obovate or obovate-elliptic, apex rounded or retuse, cuneate or narrowly rounded and 3-nerved at the base, margins entire, slightly revolute, venation slightly raised on both sides and very laxly reticulate; petiole up to 5 mm. long.

    Flower

    The small creamish-green flowers occur in dense clusters. The male flowers are 3 mm long in dense clusters of five to 10, while the female flowers are solitary or occur in groups of up to three on stalks 4-10 mm long in the leaf axils. Flowering normally takes place from

    Fruit

    Kei apple has a rounded shape and petite size measuring around 6 cm in diameter. When ripe the tough skin of the Kei apple turns from green to yellow-orange and boasts a fuzzy coat, similar to that of a peach. Its flesh is mealy and juicy, like that of an apricot and surrounds two rings of central seeds and can contain anywhere between 5 and 15 seeds total. Its flavor is extremely acidic and for most people needs to be sweetened with sugar prior to consumption. In contrast to its flavor, the Kei apple offers a highly aromatic, sweet aroma when ripe. The tree does not fruit until it is 3 years old. In southern Africa, flowering and fruiting occur from November to January. The flowers are pollinated by insects and fruit take about 4 months to mature.

    History

    Kei apple tree is native to southwest Africa specifically Namibia and the area around the Kei River, hence its namesake. It first made its way to England in 1838 than from there to Algeria, southern France, northwestern Australia, Jamaica, Egypt, the Philippines, and in the United States to Florida and California. A subtropical plant the Kei apple can be grown as a small tree or a shrub and is commonly planted to form a hedge. The plant thrives in locations above 2,600 feet and thrives in dry, sandy soils. It can be grown in saline rich soil and locations near the ocean where salty air is prevalent and is highly tolerant of drought. The Kei apple plant also is known to produce a biochemical that can inhibit the growth of other nearby plants, an occurrence known as allelopathy, while this is beneficial for weed abatement, care should be taken not to plant it too close to other fruit or vegetable-bearing plants.

    Culinary Uses

    • Ripe fruit has a pleasant flavor and is rich in vitamin C. They are eaten fresh or made into jelly and jam.
    • Kei-apples are often eaten fresh, or sprinkled with sugar to complement their natural acidity.
    • Aside from being eaten fresh, the fruit can be made into jam, used in desserts, or pickled (their natural acidity means vinegar is not needed).

    Other facts

    • In Kenya, it is mostly used for live fences and hedges.
    • Plants have dense spiny shoots that make an impermeable barrier.
    • If the fruit is soaked in water and allowed to ferment, the liquid drained off has herbicidal properties.
    • Wood is white, dense and heavy; usually too small to be of general use.
    • Trunk of Dovyalis caffra serves as a good source of hard wood for fuel, house building and furniture making.
    • The leaves are often used as fodder and are browsed by antelope.

    References:

    https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=506138#null

    https://npgsweb.ars-grin.gov/gringlobal/taxonomydetail.aspx?id=14616

    https://www.cabi.org/isc/datasheet/19648

    https://plants.usda.gov/core/profile?symbol=DOCA3

    https://en.wikipedia.org/wiki/Dovyalis_caffra

    https://www.doc-developpement-durable.org/file/Arbres-Fruitiers/FICHES_ARBRES/pomme%20caffre_Dovyalis%20caffra/Dovyalis%20caffra_WRA.pdf

    http://www.plantsoftheworldonline.org/taxon/urn:lsid:ipni.org:names:111560-1

    http://gringlobal.iita.org/gringlobal/taxonomydetail.aspx?id=14616

    https://gd.eppo.int/taxon/DOVCA

    http://www.theplantlist.org/tpl1.1/record/kew-4776111

    https://plants.jstor.org/compilation/Dovyalis.caffra

    http://tropical.theferns.info/viewtropical.php?id=Dovyalis+caffra

    https://hort.purdue.edu/newcrop/morton/kei_apple_ars.html

    http://www.tropicos.org/Name/13200641

    https://sl.ku.dk/rapporter/seed-leaflets/filer/dovyalis-caffra-27.pdf

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    Kei apple Scientific Classification

    Scientific Name: Dovyalis caffra

    Rank Scientific Name & (Common Name)
    Kingdom Plantae (Plants)
    Subkingdom Tracheobionta (Vascular plants)
    Infrakingdom Streptophyta  (land plants)
    Super Division Spermatophyta (Seed plants)
    Division Magnoliophyta (Flowering plants)
    Sub Division Spermatophytina  (spermatophytes, seed plants, phanérogames)
    Class Magnoliopsida (Dicotyledons)
    Sub-Class Dilleniidae
    Super Order Rosanae
    Order Violales
    Family Flacourtiaceae (Flacourtia family)
    Genus Dovyalis E. Mey. ex Arn. (Ceylon gooseberry)
    Species Dovyalis caffra (Hook. f. & Harv.) Warb. (kei apple)
    Synonyms
    • Aberia caffra Hook.fil.
    • Aberia caffra Hook.fil. ex Harv. & Sond.
    • Aberia edulis T.Anders.
    • Dovyalis caffra (Hook.fil. ex Harv. & Sond.) Sim
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