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<p>Floral abnormalities arising from alterations in organ identity provide valuable insights into developmental plasticity in angiosperms. Members of Amaryllidaceae are known to exhibit morphological variability; however, species-level documentation of floral homeotic abnormalities remains limited. <i>Zephyranthes rosea</i> Lindl., a widely cultivated and naturalized ornamental species, typically bears flowers with six tepals and six fertile stamens. During field observations in central India, a rare floral abnormality was recorded in which one stamen showed a petaloid transformation, appearing as a flattened, tepal-like structure lacking anther differentiation, while the remaining floral organs were normal. To the best of our knowledge, this represents the first documented report of a petaloid stamen in <i>Z. rosea</i>. The observation is discussed in the context of floral homeosis and developmental plasticity in Amaryllidaceae.</p>

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Floral identity shift in Zephyranthes rosea: first report of a petaloid stamen

  • 期刊论文

  • 发表日期：

    2026年5月22日

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  • R. Akhila,
  • Aishwarya Sahu,
  • Anurag Dwivedi,
  • Nihar Ranjan Nayak,
  • Ashwini Kumar Dixit,
  • Shweta Subramaniam,
  • Bhaskar Chaurasia

摘要

Floral abnormalities arising from alterations in organ identity provide valuable insights into developmental plasticity in angiosperms. Members of Amaryllidaceae are known to exhibit morphological variability; however, species-level documentation of floral homeotic abnormalities remains limited. Zephyranthes rosea Lindl., a widely cultivated and naturalized ornamental species, typically bears flowers with six tepals and six fertile stamens. During field observations in central India, a rare floral abnormality was recorded in which one stamen showed a petaloid transformation, appearing as a flattened, tepal-like structure lacking anther differentiation, while the remaining floral organs were normal. To the best of our knowledge, this represents the first documented report of a petaloid stamen in Z. rosea. The observation is discussed in the context of floral homeosis and developmental plasticity in Amaryllidaceae.