Calyx tubular, campanulate, or cup-shaped, apex truncate to deeply lobed, sometimes with abaxial glands, leathery, falling with petals and stamens.

 
  • 花萼管状,钟状,或杯状的,先端截形对深裂,有时背面的具腺体,革质的,与花瓣和雄蕊一同脱落。
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