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(Last Modified On 5/24/2013)
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(Last Modified On 5/24/2013)
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Family
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CELASTRACEAE
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Contributor
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GABRIEL EDWIN AND DING Hou
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Description
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Trees, shrubs, or lianas. Leaves alternate or opposite, simple; stipules small and caducous. Inflorescences dichasial, less often paniculate, racemose, or borne singly. Flowers bisexual or unisexual; calyx 4- or 5-lobed, mostly imbricate, persistent; petals 4 or 5, usually, imbricate, attached under the margin of the disc; stamens 4 or 5, alternate with the petals, inserted at or under the margin of the disc, anthers 2-celled; disc cup-shaped, or flat and fleshy, lobed or entire; ovary free from or adnate to the disc, 2- to 5-loculed (locules sometimes abort- ing), each 2- or 1-ovuled, occasionally to 8-ovuled, ovules erect or pendulous, style short or lacking, stigmas lobed or blunt. Fruit a capsule, drupe or samara; seeds usually arillate.
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Habit
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Trees, shrubs, or lianas.
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Distribution
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The family includes 53 genera and about 500 species widely distributed in the tropics, but less common in temperate regions.
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Reference
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Brizicky, G. K. The genera of Celastrales in the southeastern United States. Jour. Arnold Arboretum 45: 206-234. 1964. Loesener, T. Celestraceae. In A. Engler & K. Prantl., "Die naturlichen Pflan- zenfamilien." Ed. 2. 20b: 87-197. 1942.
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Reference
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Lundell, C. L. Celastraceae. In "Studies of American plants." Wrightia 4: 178. 1971.
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Key
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a. Plant scandent; ovary free from the disc ...... 1. Celastrus aa. Plant erect; ovary joined to the disc. b. At least some of the flowers bisexual; the ovules erect; leaf apex not emarginate. c. Inflorescences distinctly dichasial, solitary, or fasciculate; fruit an indehis- cent drupe or samara; seeds exarillate. d. Flowers, at least some of them, 4-merous; fruit a drupe ...... 2. Crossopetalum dd. Flowers 5-merous; fruit a samara. e. Leaves opposite ...... 3. Zinowiewia ee. Leaves alternate ...... 4. Wimmeria cc. Inflorescences fasciculate; fruit a dehiscent capsule; seeds arillate ...... 5. Maytenis bb. Flowers all unisexual; the ovules pendulous; leaf apex slightly emarginate...... 6. Gyrninda
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