Plant Systematics and Evolution

, Volume 305, Issue 1, pp 77–87 | Cite as

Phylogenetic placement of the Peruvian-endemic genus Machaerophorus (Brassicaceae) based on molecular data and implication for its systematics

  • Diego L. SalariatoEmail author
  • Marco A. Cueva Manchego
  • Asunción Cano
  • Ihsan A. Al-Shehbaz
Original Article


The genus Machaerophorus includes three perennial species (M. arequipa, M. laticarpus, and M. matthioloides) inhabiting the southern Peruvian Andes. However, based on the morphological data, this genus has been reduced for more than one hundred years to synonymy of several genera of various tribes, and its phylogenetic placement using molecular data has never been studied. Therefore, in this study we explored the phylogenetic placement of Machaerophorus to test its generic status and tribal assignment, using for this purpose ribosomal nuclear (ITS) and chloroplast (trnL-F, trnH-psbA, rps16 intron) data together with a comprehensive sampling of taxa. Results obtained here demonstrated that Machaerophorus represents a well-differentiated lineage within the South American Cremolobeae–Eudemeae–Schizopetaleae clade, and hence, the genus is reinstated and excluded from the placements in Sibara and Mathewsia. Based on molecular data and morphological affinities, we included it within the tribe Schizopetaleae. A key to Machaerophorus and the genera of Schizopetaleae is also presented.


Cruciferae Mathewsia Phylogeny Schizopetaleae Sibara Thelypodieae 



This project was funded by ANPCyT (Agencia Nacional de Promoción Científica y Tecnológica) Grant PICT-2013-1042 and CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas) Grant PIP-112-201301-00124CO. Our deep gratitude goes to Dr. Fernando O. Zuloaga for his valuable support for this work and the study of South American Brassicaceae over the years. We especially appreciate the help of the editor-in-chief Martin A. Lysak and three anonymous reviewers who provided useful suggestions that improved an earlier version of this paper.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Instituto de Botánica Darwinion (CONICET-ANCEFN)San Isidro, Buenos AiresArgentina
  2. 2.Laboratorio de Florística, Departamento de Dicotiledóneas, Museo de Historia NaturalUniversidad Nacional Mayor de San Marcos (UNMSM)Lima 11Peru
  3. 3.Instituto de Investigación de Ciencias Biológicas Antonio Raimondi (ICBAR)Facultad de Ciencias Biológicas, (UNMSM)Lima 1Peru
  4. 4.Missouri Botanical GardenSt. LouisUSA

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