Franck AR, Lewis PA, Oberli A, Haynes-Sutton A, Rose PE ., Campbell KCSE.

The Jamaican endemic Exostema orbiculatum belongs to Erithalis (Rubiaceae)

. Phytotaxa [Internet]. 2017 Mar. 1 [cited 2025 Dec. 6];297(3):273–281. Available from: https://phytotaxa.mapress.com/pt/article/view/phytotaxa.297.3.6