Three new Amazonian species of Myrcia sect. Myrcia (Myrtaceae) based on morphology and near-infrared spectroscopy

Autor(es)

Gaem, Paulo Henrique ^[1] ; Dos Santos, Leidiana Lima ^[2] ; Andrade, Ana ^[3] ; Vicentini, Alberto ^[4] ; Mazine, Fiorella Fernanda ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Grp Pesquisa Ecol Sistemat & Conservacao Recursos, Campus Sorocaba, Rodovia Joao Leme Santos SP-264, BR-18052780 Sorocaba, SP - Brazil

^[2] Univ Fed Rural Pernambuco, Programa Posgrad Bot, Rua Dom Manoel Medeiros S-N, BR-52171080 Recife, PE - Brazil

^[3] Inst Nacl de Pesquisas da Amazonia, Projeto Dinam Biol Fragmentos Florestais, Ave Andre Araujo 2936, BR-69067375 Manaus, AM - Brazil

^[4] Inst Nacl de Pesquisas da Amazonia, Programa Posgrad Bot, Lab Bot Amazon, Ave Andre Araujo 2936, BR-69067375 Manaus, AM - Brazil

• Tipo de documento: Artigo Científico
• Fonte: PHYTOTAXA; v. 451, n. 4, p. 267-282, JUL 7 2020.
• Citações Web of Science: 1

Resumo

Three new Amazonian species of the Myrcia splendens group from Brazil are proposed based on morphology and near - infrared spectroscopy of leaves and compared with similar taxa. Myrcia eveae resembles M. splendens and may be recognised mostly by large and oblong leaf blades that tapers abruptly at the apex and large bracts; Myrcia otocalyx also resembles M. splendens , being recognised mainly by pyriform flower buds, campanulate hypanthia that are longitudinally ridged, and sepals of different shapes that are patent on fruit; and Myrcia prismatica is similar to M. deflexa , being recognised essentially by chartaceous leaf blades, pedicels clustered at the tips of inflorescence axes, and oblong fruits with longitudinal edges. Spectral data revealed a unique pattern for each one of the new species and the putative related ones, reinforcing the morphological propositions. This is the first study to use morphology and spectroscopy of leaves combined to propose new species of Myrtaceae. Information on geographical distribution, habitat, conservation status, and an identification key are also 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