Freitas, Juliana Gomes, Lania Isis Ferreira Alves, Daniela Cristina Zappi, Erton Mendonça De Almeida, Lizandro N. Peraza-Flores, Daniel Oliveira Jordão Do Amaral, Daniel Bruno Pereira Araújo, and Fabiane Rabelo Da Costa Batista. 2021. “Novelties in Cactaceae from Eastern Brazil: Adding Two New Species and One New Nothospecies to Tacinga (Opuntioideae)”. Phytotaxa 490 (3). Auckland, New Zealand:239–252. https://doi.org/10.11646/phytotaxa.490.3.2.