A taxonomic account of Myrcia (Myrtaceae) at the sites of the Biological Dynamics of Forest Fragments Project, Amazonas, Brazil

Autor(es)

Paulo Henrique Gaem ^[1] ; Eve Lucas ^[2] ; Ana Andrade ^[3] ; Alberto Vicentini ^[4] ; Fiorella Fernanda Mazine ^[5]

Afiliação do(s) autor(es)

^[1] Universidade Federal de São Carlos. Centro de Ciências e Tecnologias para a Sustentabilidade - Brasil

^[2] Royal Botanic Gardens - Reino Unido

^[3] Instituto Nacional de Pesquisas da Amazônia. Projeto Dinâmica Biológica de Fragmentos Florestais - Brasil

^[4] Instituto Nacional de Pesquisas da Amazônia. Prog. de Pós-graduação em Botânica - Brasil

^[5] Universidade Federal de São Carlos. Centro de Ciências e Tecnologias para a Sustentabilidade - Brasil

• Tipo de documento: Artigo Científico
• Fonte: Rodriguésia; v. 73, 2022-04-01.

Resumo

Abstract Myrcia is the sole genus of the Myrciinae, one of the nine subtribes of Myrteae (Myrtaceae). The Amazon forest holds about one-quarter of the Brazilian species of Myrcia, but the genus is still understudied in this whole region. In this context, this study presents a floristic survey of Myrcia in the permanent plots of the Biological Dynamics of Forest Fragments Project (BDFFP), in Amazonas state, Brazil. The genus is represented by 36 species in the study area, comprehending 32% of its total richness in the Brazilian Amazon forest, with 19 of them endemic to this domain. Myrcia neospeciosa is reported as a new occurrence for Amazonas state and M. grandis is recorded for the first time from upland terra firme forests on clayish soils. Myrcia cuspidata, a species with calyptrate flowers, is classified under Myrcia sect. Aulomyrcia, representing the second taxon of the genus with this feature removed from Myrcia sect. Calyptranthes. Finally, morphological aspects of the infra-generic categories of Myrcia are reported more overlapping than previously thought. A map containing the location of the study area, an identification key, descriptions, comments, and figures are provided. (AU)

• Processo FAPESP: 18/13985-9 - Myrcia s.l. (Myrtaceae) na Amazônia Central: testando e identificando grupos com evidências morfológicas e espectrais
• Beneficiário: Paulo Henrique Gaem Barbosa
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica