Hypericumdrummondii is the name of a species, part of the genus Hypericum.
This name is an alternative combination by Torr. & A.Gray of an original description of species by Grev. & Hook. under the rules of the International Code of Nomenclature for algae, fungi, and plants (ICN / commonly called the botany code)..
Botany
Revisions
Sarothradrummondii Grev. & Hook.Sarothradrummondii is the combination used by Grev. & Hook. in the original description of the species.