leaflets (2 or)3- or 4-jugate, opposite or subopposite;
成对小叶(2或者)3或4,对生或近对生;
inflorescence axillary, long peduncled, capitate, bisexual, enclosed between 2 subopposite, often showy, involucral bracts;
花序腋生,具长柄,头状,两性,包围在2近对生,通常艳丽的总苞片之间;
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