1.
Robson NKB. Studies in the genus Hypericum L. (Hypericaceae) 5(1). Sections 10. Olympia to 15/16. Crossophyllum. Phytotaxa [Internet]. 2013 May 14 [cited 2025 Dec. 5];4(1):5–126. Available from: https://phytotaxa.mapress.com/pt/article/view/phytotaxa.4.1.2