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(Last Modified On 7/31/2013)
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(Last Modified On 7/31/2013)
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Genus
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Citrullus Schrad. ex Ecklon & Zeyh.
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PlaceOfPublication
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Enum. PI. Afric. Austral. 279. 1834, nom. cons.
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Note
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TYPE: C. vulgaris Schrad.
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Synonym
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Colocynthis Miller, Gard. Dict. abr. ed. 4. 1754. TYPE: not designated.
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Description
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Monoecious, tendriled vines; stems creeping, 5- to 10-sulcate. Leaves petiolate, deeply pinnatifid, the lobes often further divided; tendrils 2- to 5-branched, rarely spinescent. Staminate flowers solitary or rarely fascicullate; calyx broadly campanulate, 5-lobate; corolla rotate or broadly campanulate, deeply 5-lobate; stamens 3, inserted on the calyx tube at the base, the filaments free, short, the anthers free or slightly connate, flexuous, 1 anther unilocular, others bilocular; pistillodium glanduliform. Pistillate flowers disposed similarly to the staminate flowers; calyx and corolla as in the staminate flowers; ovary ovoid, 3-carpellate, the styles 3, connate, the stigmas 3, reniform, somewhat bilobate; staminodia 3, short, setiform or ligulate. Fruits globose or oblong, large, fleshy or dry, inde- hiscent; seeds numerous, horizontal, oblong, compressed, marginate or emarginate.
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Habit
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vines
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Note
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Citrullus is an Old World genus of 3 or 4 species with many variants and cultivars. It is widely distributed in the tropics and warm temperate regions of the world, and it is often spontaneous after cultivation. The following single species is known from Panama.
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Reference
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Cogniaux, A. & H. Harms. 1924. Cucurbitaceae: Cucurbiteae-Cucumerinae in A. Engler. Das Pflanzenreich 88 (IV, Fam. 272, II): 1-246.
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