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<p>A new species of Lecythidaceae<i>, Gustavia beidae</i>, from the Amazonian ecosystems of Colombia, Ecuador, and Peru, is formally described. This species is presented with detailed illustrations, its morphological affinities with other taxa are discussed and an identification key to <i>Gustavia</i> section <i>Hexapetala</i> is provided. <i>Gustavia beidae</i> exhibits morphological features typical of section <i>Hexapetala</i>. These characteristics include the presence of a winged hypanthium and calyx lobes with abaxial thickening that forms an inverted Y structure. The species is distinguished by its semi-amplexicaul, decurrent bracteoles, which originate at the base of the pedicel and extend to the hypanthium and fruit, often tending to fuse or appear fused. The ovary has 8 – 10 prominent wings, encompassing 8 – 10 locules, each containing 2 – 3 seeds, while the calyx consists of 8 – 10 distinct lobes.</p>

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Gustavia beidae (Lecythidaceae): a new species from the Amazon Forest

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年4月29日

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  • Wilmar Guzmán Zapata,
  • Manuela Alzate Lozada,
  • Juan Sebastián Moreno,
  • Diego Jesús Macias Pinto,
  • Jorge Mario Becoche-Mosquera

摘要

A new species of Lecythidaceae, Gustavia beidae, from the Amazonian ecosystems of Colombia, Ecuador, and Peru, is formally described. This species is presented with detailed illustrations, its morphological affinities with other taxa are discussed and an identification key to Gustavia section Hexapetala is provided. Gustavia beidae exhibits morphological features typical of section Hexapetala. These characteristics include the presence of a winged hypanthium and calyx lobes with abaxial thickening that forms an inverted Y structure. The species is distinguished by its semi-amplexicaul, decurrent bracteoles, which originate at the base of the pedicel and extend to the hypanthium and fruit, often tending to fuse or appear fused. The ovary has 8 – 10 prominent wings, encompassing 8 – 10 locules, each containing 2 – 3 seeds, while the calyx consists of 8 – 10 distinct lobes.