YU, W.-B. Nomenclatural clarifications for names in Boschniakia, Kopsiopsis and Xylanche (Orobanchaceae). Phytotaxa, Auckland, New Zealand, v. 77, n. 3, p. 40–42, 2013. Disponível em: https://phytotaxa.mapress.com/pt/article/view/5941. Acesso em: 5 dec. 2025.