Weber A, Wei YG, Puglisi C, Wen F, Mayer V, Moller M. A new definition of the genus Petrocodon (Gesneriaceae). Phytotaxa [Internet]. 2011 May 16 [cited 2025 Dec. 5];23(1):49-67. Available from: https://phytotaxa.mapress.com/pt/article/view/phytotaxa.23.1.3