STEINMANN, V. W.; FLORES-OLVERA, H.; OCHOTERENA, H. Euphorbia villarrealii, a new species from harsh environments of Coahuila, Mexico. Phytotaxa, Auckland, New Zealand, v. 783, n. 2, p. 173–182, 2026. DOI: 10.11646/phytotaxa.783.2.6. Disponível em: https://phytotaxa.mapress.com/pt/article/view/phytotaxa.783.2.6. Acesso em: 4 nov. 2026.