Julius A, Kamin I, Kiew R, Utteridge TM. Gardneria and Spigelia (Loganiaceae), two genera new to the Flora of Peninsular Malaysia. Phytotaxa [Internet]. 2013 Sep. 5 [cited 2025 Dec. 6];129(1):39–46. Available from: https://phytotaxa.mapress.com/pt/article/view/phytotaxa.129.1.3