SMITH, G. F.; SHTEIN, R. Taxonomic notes on Kalanchoe porphyrocalyx (Crassulaceae subfam. Kalanchooideae) and its horticultural derivatives. Phytotaxa, Auckland, New Zealand, v. 478, n. 2, p. 225–238, 2021. DOI: 10.11646/phytotaxa.478.2.4. Disponível em: https://phytotaxa.mapress.com/pt/article/view/phytotaxa.478.2.4. Acesso em: 6 dec. 2025.