Template:Robson, 2006
- Robson, N.K.B. 2006. Studies in the genus Hypericum L. (Clusiaceae). 4(3). Section 9. Hypericum sensu lato (part 3): subsection 1. Hypericum series 2. Senanensia, subsection 2. Erecta and section 9b. Graveolentia. Systematics and Biodiversity 4(1): 19–98. DOI: 10.1017/S1477200005001842
