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Issue: Vol. 641 No. 3: 20 Mar. 2024
Type: Article
Published: 2024-03-20
DOI: 10.11646/phytotaxa.641.3.1
Page range: 183-190
Abstract views: 101
PDF downloaded: 55

Finding the last missing white oak hybrid from the Iberian Peninsula (Fagaceae, Quercus, sect. Quercus)

MHNC-UP - Museu de História Natural e da Ciência da Universidade do Porto - Herbário PO, Universidade do Porto, Praça Gomes Teixeira, 4099-002, Porto, Portugal. BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661 Vairão, Portugal. CIBIO (Research Center in Biodiversity and Genetic Resources) - InBIO (Research Network in Biodiversity and Evolutionary Biology), University of Porto; Campus Agrário de Vairão; Rua Padre Armando Quintas; 4485-661 Vairão; Portugal.
MHNC-UP - Museu de História Natural e da Ciência da Universidade do Porto – Herbário PO, Universidade do Porto, Praça Gomes Teixeira, 4099-002, Porto, Portugal
HSS Herbarium. Dep. Forest Production and Biodiversity. CICYTEX. 06187. Guadajira, Badajoz, Spain.
Mediterranean forets Hybridization nothotaxa taxonomy biogeography Eudicots

Abstract

The genus Quercus is widely known for its ability to hybridize among sympatric species, especially inside the same Section. The Iberian Peninsula is a major phylogeographic hotspot for oak diversity, with almost all possible combinations of hybrids already described inside sect. Quercus. In this work we present the remaining hybrid not yet described among the Iberian white oaks; we found it in one of the few areas (in the Southern Iberian Peninsula) where both parents (the Algerian oak, Q. canariensis, and the Lusitanian dwarf oak, Q. lusitanica) grow sympatrically. We provide a description of this nothotaxon (which we named Quercus ×gaonae) based on morphological characters related to leaf shape and trichome analysis. This work emphasizes the practice of natural history and encourages botanists to keep up their work on describing plant diversity in a major hotspot like the Mediterranean Basin.

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