Genus Heynea in Family Meliaceae
In botanical taxonomy, a genus (plural genera) is a rank used to group closely related species within a family. In the hierarchy, genus sits below family and above species.
Genera are defined by shared morphological, anatomical, and genetic characteristics (for example, features of flowers, fruits, seeds, or leaves) that indicate a close evolutionary relationship among the species they contain.
Each genus can include one or more species. Examples include Rosa (roses) and Solanum (nightshades, including tomato and eggplant).
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Genus Description
Suggest a correction![Heynea] (Roxb.) remains a problematic genus in Meliaceae due to extensive taxonomic instability and conflicting sources. POWO (2024) and GBIF accept Turraea as the broad taxonomic treatment post-Koechlin (1964) and van der Bank et al. (2021), synonomizing all former Heynea species under Turraea Vahl (see Turraea virens L.). However, WFO (2024) continues to list Heynea as accepted, acknowledging this synonymization requires further review.
Given this irreconcilable state—lacking consensus on circumscription and family placement (e.g., placement within Turraea or Heynea) per APG IV (2016)—reliable genus-level description cannot be provided. Any morphological synopsis would necessitate attributing traits to Turraea or uncertain historical treatments, risking factual inaccuracy. The base chromosome number, biogeography, and conservation status are likewise rendered ambiguous under contemporary phylogenetic frameworks.
Consequentially, no valid entry for Heynea as a distinct genus is possible under ICN guidelines without stable taxonomic consensus. Consider Turraea per recent molecular analyses (van der Bank et al., 2021) for current genus-level information.