FRYER, J.; ZIKA, P. The typification of Cotoneaster symondsii (Rosaceae). Phytotaxa, Auckland, New Zealand, v. 164, n. 2, p. 149–153, 2014. DOI: 10.11646/phytotaxa.164.2.9. Disponível em: https://phytotaxa.mapress.com/pt/article/view/phytotaxa.164.2.9. Acesso em: 6 dec. 2025.