SIMPSON, M. G.; MABRY, M. E.; HASENSTAB-LEHMAN, K.

Transfer of four species of Cryptantha to the genus Johnstonella (Boraginaceae)

. Phytotaxa, Auckland, New Zealand, v. 425, n. 5, p. 279–289, 2019. DOI: 10.11646/phytotaxa.425.5.3. Disponível em: https://phytotaxa.mapress.com/pt/article/view/phytotaxa.425.5.3. Acesso em: 6 dec. 2025.