Verbatim text: Robson, N. K. B. 1981. Studies in the genus Hypericum L. (Guttiferae) 2. Characters of the genus. Bull. Brit. Mus. (Nat. Hist.), Bot. 8: 55–226.
Author: Robson, N.K.B.
Year: 1981
Title: Studies in the genus Hypericum L. (Guttiferae) 2. Characters of the genus
Journal: Bull. Brit. Mus. (Nat. Hist.), Bot
Volume: 8
Pages: 55–226