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<p><i>Genista anxantica</i> is an extremophile taxon described by Michele Tenore and strictly endemic to the mephitic fields in Ansanto Valley (Mefite, Rocca San Felice, province of Avellino, Campania region, SW Italy). Its taxonomic distinctness from the widespread <i>G. tinctoria</i> subsp. <i>tinctoria</i>, initially undoubted, has later been long debated. Recent population genetic evidence suggests that the Mefite population represents an ecotype within <i>G. tinctoria</i>, shaped by extreme ecological conditions. In this contribution, we integrate morphological data and ploidy estimation by flow cytometry with ecological and genetic information to reassess its taxonomical status. Our results highlight the distinctness of <i>G. anxantica</i> as a local, genetically established variant adapted to a peculiar ecology. Accordingly, we propose the subspecific rank. The name <i>G. anxantica</i> is typified on a specimen preserved in Tenore’s herbarium (NAP, Botanical Garden of Naples).</p>

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Is Genista anxantica (Fabaceae, Genisteae) worth of taxonomic recognition? An integrative approach

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年4月15日

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  • E. Del Guacchio,
  • R. Vallariello,
  • E. Di Iorio,
  • S. Tomasello,
  • O. De Castro

摘要

Genista anxantica is an extremophile taxon described by Michele Tenore and strictly endemic to the mephitic fields in Ansanto Valley (Mefite, Rocca San Felice, province of Avellino, Campania region, SW Italy). Its taxonomic distinctness from the widespread G. tinctoria subsp. tinctoria, initially undoubted, has later been long debated. Recent population genetic evidence suggests that the Mefite population represents an ecotype within G. tinctoria, shaped by extreme ecological conditions. In this contribution, we integrate morphological data and ploidy estimation by flow cytometry with ecological and genetic information to reassess its taxonomical status. Our results highlight the distinctness of G. anxantica as a local, genetically established variant adapted to a peculiar ecology. Accordingly, we propose the subspecific rank. The name G. anxantica is typified on a specimen preserved in Tenore’s herbarium (NAP, Botanical Garden of Naples).