Machado, Ricardo Ferreira, and Luciano Paganucci de Queiroz. “A New Species of Prosopanche (Hydnoraceae) from Northeastern Brazil”. Phytotaxa 75, no. 1 (December 18, 2012): 58–64. Accessed December 5, 2025. https://phytotaxa.mapress.com/pt/article/view/phytotaxa.75.1.5.