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(Last Modified On 10/1/2013)
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(Last Modified On 10/1/2013)
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Genus
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TRIFOLIUM L.
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Contributor
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W. G. D'Arcy
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Synonym
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Trifolium L., Sp. P1. 764, 1753; Gen. PI., ed. 5. 337. 1754. TYPE: T. pratense L.
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Description
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Annual or perennial herbs. Leaves mostly trifoliolate, the leaflets minutely toothed at the apex. Inflorescences axillary or pseudo terminal, disposed as
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Habit
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herbs
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Description
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heads, umbels or as short racemes on ascending peduncles. Flowers small; calyx tubular, glabrous or pubescent, the 5 teeth usually bristle tipped, equal or nearly so; keel petals shorter than the wing petals, some or all of the petals connate and adnate to the staminal sheath; stamens diadelphous, some or all of the filaments apically expanded, the anthers alike; ovary small, few-ovulate, the styles short, curved, glabrous, the stigma minute, capitate. Fruits small, mostly enclosed in the calyx, mostly indehiscent, thin; seeds few (or 1).
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Note
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This genus includes some 300 species
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Distribution
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temperate and subtropical regions.
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Note
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Many species are important fodder plants. They are also important sources of honey. "Clover." "Trebol."
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Common
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Clover Trebol
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Key
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a. Upper calyx lobes shorter than the others; petioles pubescent; leaflets mostly less than 10 mm long; inflorescence mostly less than 10 mm across; flowering pedicels less than 2 mm long, the peduncle long hairy ...... 1. T. dubium aa. Upper calyx lobes longer than the others; petioles glabrate; leaflets mostly much more than 10 mm long, inflorescence mostly more than 15 mm across; flowering pedicels more than 3 mm long, the peduncle glabrate ...... 2. T. repens
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Project Name
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