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Issue: Vol. 752 No. 1: 17 Apr. 2026
Type: Article
Published: 2026-04-17
DOI: 10.11646/phytotaxa.752.1.4
Page range: 61-71
Abstract views: 0
PDF downloaded: 0

Geometric morphometrics of leaf morphology in two species of Philodendron section Philodendron (Araceae) from the Amapá State Forest, Brazil: under environmental influences

Universidade do Estado do Amapá - UEAP, Bolsista de Iniciação Científica e Tecnológica, Avenida Presidente Vargas 650, Bairro Central, 68.900-070, Macapá, Amapá, Brazil
Universidade do Estado do Amapá - UEAP, Docente do Curso de Engenharia Florestal, Avenida Presidente Vargas 650, Bairro Central, 68.900-070, Macapá, Amapá, Brazil
Universidade de Brasília - UnB, Instituto de Ciências Biológicas, Pesquisadora colaboradora assistente do Departamento de Botânica, Campus Universitário Darcy Ribeiro, Bairro Asa Norte, 70.910-900, Brasília, Distrito Federal, Brazil
Universidade do Estado do Amapá – UEAP, Docente do Curso de Licenciatura em Ciências Naturais, Avenida Presidente Vargas 650, Bairro Central, 68.900-070, Macapá, Amapá, Brazil
Alismatales Amazon Domain Aroideae geometric morphometrics Monocots

Abstract

Geometric morphometrics encompasses a set of methods for the acquisition, processing, and quantitative analysis of biological shapes. This study applied this approach to leaf blades of species from Philodendron section Philodendron (Jacq.) Schott, collected in the Amapá State Forest (FLOTA/AP), with the aim of investigating morphological patterns associated with environmental factors. Two species were selected for analysis: Philodendron atabapoense G.S.Bunting and P. ornatum Schott. The results revealed significant variation in leaf morphology, particularly in leaf base and circularity, which were strongly influenced by climatic and altitudinal variables. The findings highlight the value of geometric morphometrics as a complementary tool for species delimitation and for understanding morphological diversity within the genus Philodendron.

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How to Cite

Silva, A.N., Brito, A.C., Camelo, M.C. & Pereira, L.A. (2026) Geometric morphometrics of leaf morphology in two species of Philodendron section Philodendron (Araceae) from the Amapá State Forest, Brazil: under environmental influences. Phytotaxa 752 (1): 61–71. https://doi.org/10.11646/phytotaxa.752.1.4