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Issue: Vol. 758 No. 1: 20 May 2026
Type: Article
Published: 2026-05-20
DOI: 10.11646/phytotaxa.758.1.3
Page range: 33-46
Abstract views: 0
PDF downloaded: 0

A new species of Peperomia subg. Tildenia (Piperaceae) from the Atacama Desert, Chile

Herbario SGO; Museo Nacional de Historia Natural; Interior Parque Quinta Normal S/N; Santiago; Chile
Laboratorio de Botánica; Departamento de Ciencias Ambientales y Recursos Naturales Renovables; Facultad de Ciencias Agronómicas; Universidad de Chile
Magnoliids Antofagasta region fog oasis lomas lithophytic plant taxonomy

Abstract

Peperomia mucronulata is described as a new Chilean species, extending southwards the distribution of Peperomia subg. Tildenia along the Pacific coast. Morphological, geographical, and ecological data support its classification as a clearly different taxon from the species belonging to clade D or III (which includes morphologically similar species) and P. umbilicata. A detailed description is presented, along with information on its habitat and ecology, a distribution map, and the species illustration. Additionally, a comparative table highlights the characteristics that distinguish P. mucronulata from the seven morphologically similar Peperomia species. Peperomia mucronulata is suggested to be classified as Critically Endangered (CR) according to the IUCN Red List categories.

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How to Cite

Villarroel, A.E. & Ibáñez, S.T. (2026) A new species of Peperomia subg. Tildenia (Piperaceae) from the Atacama Desert, Chile. Phytotaxa 758 (1): 33–46. https://doi.org/10.11646/phytotaxa.758.1.3