Verbatim text: Robson, N. K. B. 2002. Studies in the genus Hypericum L. (Guttiferae) 4(2). Section 9. Hypericum sensu lato (part 2): subsection 1. Hypericum series 1. Hypericum. Bull. Nat. Hist. Mus. London, Bot. 32: 61–123.
Author: Robson, N.K.B.
Year: 2002
Title: Studies in the genus Hypericum L. (Guttiferae) 4(2). Section 9. Hypericum sensu lato (part 2): subsection 1. Hypericum series 1. Hypericum
Journal: Bull. Nat. Hist. Mus. London, Bot
Volume: 32
Pages: 61–123