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Issue: Vol. 754 No. 1: 1 May 2026
Type: Article
Published: 2026-05-01
DOI: 10.11646/phytotaxa.754.1.1
Page range: 1-54
Abstract views: 0
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Taxonomic revision of the Asplenium mucronatum clade (Aspleniaceae): towards understanding a highly diverse group of ferns from the Neotropical region

Programa de Pós-graduação em Botânica, Escola Nacional de Botânica Tropical, Instituto de Pesquisas Jardim Botânico do Rio de Janeiro. Rua Pacheco Leão 2040, Solar da Imperatriz, Horto, 22460-030, Rio de Janeiro, RJ, Brazil; Herbário Dr. Roberto Miguel Klein, Universidade Regional de Blumenau. Rua Antônio da Veiga 140, Itoupava Seca, 89030-903, Blumenau, SC, Brazil
Instituto de Pesquisas Jardim Botânico do Rio de Janeiro. Rua Pacheco Leão 915, Jardim Botânico, 22460-030, Rio de Janeiro, RJ, Brazil
University of Mississippi, National Center for Natural Product Research, Research Institute of Pharmaceutical Sciences. Oxford, MS, US
Universidade Federal do Rio de Janeiro, Instituto de Biologia, Departamento de Botânica. Av. Carlos Chagas Filho 373, Cidade Universitária, 21941-902, Rio de Janeiro, RJ, Brazil
Universidade Federal do Rio de Janeiro, Instituto de Biologia, Departamento de Botânica. Av. Carlos Chagas Filho 373, Cidade Universitária, 21941-902, Rio de Janeiro, RJ, Brazil
Atlantic Forest conservation nomenclature scales spores taxonomy Pteridophytes

Abstract

Asplenium (Aspleniaceae) is the most species-rich genus (ca. 700 spp.) of leptosporangiate ferns, with a worldwide distribution. Recent phylogenetic analyses of Asplenium have recovered the Asplenium mucronatum clade as a newly recognized lineage within the genus. This clade was recovered with 11 Neotropical species, ten of which occur in the Brazilian Atlantic Forest of southeastern Brazil, recognized as the center of richness and endemism for the group. In this study, we present a taxonomic treatment of the Asplenium mucronatum clade, including analyses of stem scales and spore morphology. We describe three new species, designate ten lectotypes, recognize two synonymized names as accepted species, and synonymize a previously accepted species. All species are described in detail, and we provide an identification key, preliminary conservation assessments, distribution maps, and additional notes.

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How to Cite

Lino, V., Mynssen, C.M., Külkamp, J., Reis, A. & Sylvestre, L.D.S. (2026) Taxonomic revision of the Asplenium mucronatum clade (Aspleniaceae): towards understanding a highly diverse group of ferns from the Neotropical region. Phytotaxa 754 (1): 1–54. https://doi.org/10.11646/phytotaxa.754.1.1