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3. Tribe CASSIEAE
决明族 jue ming zu
Authors: Dezhao Chen, Prof. Dianxiang Zhang & Kai Larsen
Leaves paripinnate or imparipinnate, rarely bipinnate. Flowers bisexual, polygamous, or plants dioecious, actinomorphic or zygomorphic. Receptacle cup-shaped. Sepals 4 or 5, rarely 3 or 6, imbricate. Petals usually 5, sometimes 3, rarely absent. Stamens various in number, sometimes with staminodes; anthers basifixed, rarely dorsifixed, opening by apical pores or by lateral short slits. Ovary or ovary stipe inserted at base of receptacle, free; ovules 2 to numerous, rarely solitary.
About 21 genera and 730-740 species: mainly distributed in the tropics and subtropics; four genera and 21 species (15 introduced) in China.
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| 1 |
Leaves imparipinnate; leaflets alternate. |
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9 Zenia |
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Leaves abruptly pinnate; leaflets opposite |
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(2) |
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| 2 (1) |
Petioles and rachis of leaves without glands; stamens 10, filaments of 3 abaxial antisepalous stamens sigmoidally curved, usually longer than anthers; legume indehiscent. |
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10 Cassia |
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Petioles and rachis of leaves with or without glands; stamens 10 or 5 fertile, filaments straight; legume dehiscent or indehiscent |
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(3) |
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| 3 (2) |
Bracteoles absent; petals subequal; legume either indehiscent or inertly dehiscent through 1 or both sutures, if latter, not coiling, or valves breaking up into 1-seeded joints. |
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11 Senna |
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Bracteoles present; petals unequal; legume elastically dehiscent, valves coiling. |
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12 Chamaecrista |
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Lower Taxa
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