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15 December 2015 Resolving Species Delimitations in the Eugenia involucrata Group (Eugenia sect. Phyllocalyx - Myrtaceae) with Morphometric Analysis
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Abstract

Eugenia (Myrtaceae) is the largest genus of Neotropical Myrtaceae comprising ca. 1,100 species. Eugenia sect. Phyllocalyx is a group that is morphologically characterized by the presence of leaf-like bracts and showy sepals. During the taxonomic review of the section, a complex of species closely related to E. involucrata, including Eugenia calycina, E. cavalcanteana, E. suffrutescens, E. stricta, E. neoformosa, E. incertissima, and E. chodatii, was identified.We carried out a morphometric analysis and taxonomic review of these species. Measures of 12 vegetative and floral characters were sampled from 77 herbarium specimens, encompassing the morphological variability and the geographic distribution of the species. A principal component analysis (PCA) was carried out to test the morphological discontinuity within the complex. Separate morphological groups were not revealed by the PCA and therefore we propose E. involucrata to be a single, highly variable species. A recircumscription and nomenclatural update of E. involucrata are presented, including seven lectotypifications and 17 synonyms, of which seven are new.

© Copyright 2015 by the American Society of Plant Taxonomists
Mariana de Oliveira Bünger, Pedro Einsehlor, Maria Leticia Neves Figueiredo, and João Renato Stehmann "Resolving Species Delimitations in the Eugenia involucrata Group (Eugenia sect. Phyllocalyx - Myrtaceae) with Morphometric Analysis," Systematic Botany 40(4), 995-1002, (15 December 2015). https://doi.org/10.1600/036364415X690030
Published: 15 December 2015
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