Jones, K.E., Sequeira, M., Carine, M. and Jardim, R. 2014. A new species of Pericallis (Senecioneae, Asteraceae) endemic to Porto Santo (Madeira, Portugal) . Phytotaxa. 186, 4 (Dec. 2014), 199–206. DOI:https://doi.org/10.11646/phytotaxa.186.4.3.