Bárcenas R. T., A molecular phylogenetic approach to the systematics of Cylindropuntieae (Opuntioideae, Cactaceae), Cladistics, 2016, 32(4):351-359, doi: 10.1111/cla.12135
The analysis of three plastid regions clarifies generic boundaries in Cylindropuntieae. It discusses the removal of Micropuntia pulchella from Grusonia and four lineages within Cylindropuntia. The position of Micropuntia can be compared with the later plastome analysis by Majure and co-authors.