Systematics of Oxalis subg. Thamnoxys (Endl.) Reiche sect. Holophyllum Progel (Oxalidales, Oxalidaceae)

Oxalis sect. Holophyllum (Oxalidaceae) is a small group of species that are endemic to the Brazilian Atlantic Forest in the states of Rio de Janeiro, Minas Gerais, Espírito Santo, and Bahia. Species of the section can be recognized by the unifoliolate leaves, one-seeded carpels, and the common presence of dorsiventrally flattened (and sometimes winged) peduncles and/or petioles. Circumscriptions of the currently accepted species needed to be revaluated, as the overlap in several features have blurred limits among morphologically similar taxa. In this study we evaluate the monophyly and phylogenetic relationships among species of O. sect. Holophyllum, and provide an updated taxonomic study of the section, aiming at improving species circumscriptions and facilitating species-level identification. For this task, we analyzed samples from herbaria and carried out fieldwork to observe the plants in loco, collect samples, and gather material for DNA extraction, amplification, and sequencing. B..., , , Data from: Systematics of Oxalis subg. Thamoxys (Endl.) Reiche sect. Holophyllum Progel (Oxalidales, Oxalidaceae); Fiaschi et al. (2024)

Data are organized by:

Alignment in fasta format: alignment matrix with concatenated data from ITS, petA-psbJ and trnL-trnF used to infer phylogenetic relationships of Oxalis.

Trees in newick format: Phylogenetic trees from Maximum Likelihood and Bayesian analysis based on the concatenated matrix.