Simpson MG, Mabry ME, Hasenstab-Lehman K.

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

. Phytotaxa [Internet]. 2019 Dec. 12 [cited 2025 Dec. 6];425(5):279–289. Available from: https://phytotaxa.mapress.com/pt/article/view/phytotaxa.425.5.3