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(Last Modified On 5/8/2013)
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(Last Modified On 5/8/2013)
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Genus
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Ziziphus Mill.
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PlaceOfPublication
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Gard. Dict. Abr. ed. 4. 1754.
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Description
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Shrubs or small trees, rarely lianas, mostly deciduous, frequently with stipular spines. Leaves alternate, rarely subopposite, 3-nerved, or rarely more or less pinnately nerved, mostly dentate; petiolate, the stipules mostly spinulose and unequal. Inflorescences cymose, axillary, few-flowered, rarely thyrses and terminal. Flowers bisexual; floral tube shallow; sepals (4-)5, keeled, deciduous; petals (4-)5, clawed; stamens (4-)5, longer than the petals; nectariferous disc surrounding the ovary; ovary inferior to subinferior at anthesis, becoming superior in fruit, 2(-3)-locular, the style 1, the stigmas 2(-3), small. Fruit a drupe, ovoid to more or less obovoid; seed 1, ellipsoid.
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Habit
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Shrubs or small trees
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Note
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A tropical and subtropical genus of 40-100 species, some of which, including Ziziphus mauritiana Lam., are cultivated for their edible fruits.
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Key
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a. Undersurfaces of the leaves and young twigs densely tomentose; leaves oval to suborbicular, the apices obtuse to retuse; petals clawed but not conspicuously hooded ------------------------ 1. Z. mauritiana aa. Undersurfaces of the leaves glabrous except for small tufts of trichomes at the bases of the 3 main veins; leaves elliptic, the apices acute-acuminate; petals conspicuously hooded --- -- 2. Z. strychnifolia
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