biostudies-literatureUnknown129(4)Proenca CEBConselho Nacional de Desenvolvimento Científico e TecnológicoCoordenação de Aperfeiçoamento de Pessoal do Ensino Superior<h4>Background and aims</h4>Psidium is the fourthth largest genus of Myrtaceae in the Neotropics. Psidium guajava is widely cultivated in the tropics for its edible fruit. It is commercially under threat due to the disease guava decline. Psidium cattleyanum is one of the 100 most invasive organisms in the world. Knowledge of the phylogenetic relationships within Psidium is poor. We aim to provide a review of the biology, morphology and ecology of Psidium, a phylogenetic tree, an infrageneric classification and a list of species.<h4>Methods</h4>Morphological and geographic data were obtained by studying Psidium in herbaria and in the field between 1988 and 2020. Forty-six herbaria were visited personally. A database of approx. 6000 specimens was constructed, and the literature was reviewed.Annals of botany367-388https://www.ebi.ac.uk/biostudies/studies/S-EPMC8944734biostudies-literatureDiversity, phylogeny and evolution of the rapidly evolving genus Psidium L. (Myrtaceae, Myrteae).PMC8944734Tuler ACLucas EJStaggemeier VGProenca CEBde-Carvalho PSVasconcelos TNDCde Faria JEQForni-Martins ERda Mata LRInglis PWda Costa IRfalseDiversity, phylogeny and evolution of the rapidly evolving genus Psidium L. (Myrtaceae, Myrteae).<h4>Background and aims</h4>Psidium is the fourthth largest genus of Myrtaceae in the Neotropics. Psidium guajava is widely cultivated in the tropics for its edible fruit. It is commercially under threat due to the disease guava decline. Psidium cattleyanum is one of the 100 most invasive organisms in the world. Knowledge of the phylogenetic relationships within Psidium is poor. We aim to provide a review of the biology, morphology and ecology of Psidium, a phylogenetic tree, an infrageneric classification and a list of species.<h4>Methods</h4>Morphological and geographic data were obtained by studying Psidium in herbaria and in the field between 1988 and 2020. Forty-six herbaria were visited personally. A database of approx. 6000 specimens was constructed, and the literature was reviewed.2022-01-01T00:00:00Z2022 Mar2025-04-21T14:17:59.384Z2025-04-21T14:17:59.384ZS-EPMC89447343503411710.1093/aob/mcac005