KOVALCHUK, A. Typification of the name Symphytum nodosum (Boraginaceae). Phytotaxa, Auckland, New Zealand, v. 671, n. 2, p. 175–182, 2024. DOI: 10.11646/phytotaxa.671.2.6. Disponível em: https://phytotaxa.mapress.com/pt/article/view/phytotaxa.671.2.6. Acesso em: 9 apr. 2025.