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