Research Associate, Natural History Museum, Cromwell Road, London, England, SW7 5BD
Hypericaceae of North America Update, database (version 2011)
Updated for ITIS by the Flora of North America Expertise Network, in connection with an update for USDA PLANTS (2007-2010)
Robson, Norman K.B.
Studies in the genus Hypericum L. (Guttiferae) 3. Sections 1. Campylosporus to 6a. Umbraculoides
Journal/Book Name, Vol. No.:
Bulletin of the Natural History Museum London, vol. 12, vol. 4
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