Hypericum bupleuroides

Hypericum bupleuroides
Foliage and flowers of the species
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Malpighiales
Family:	Hypericaceae
Genus:	Hypericum
Section:	Hypericum sect. Bupleuroides Stef.
Species:	H. bupleuroides
Binomial name
Hypericum bupleuroides Stef.

Hypericum bupleuroides is a species of perennial flowering plant in the St John's wort family, Hypericaceae. It grows 45–80 centimeters tall, and notably has perfoliate leaves that are fused at the stem. It has pyramid-shaped flower clusters of 1 to 25 flowers with yellow petals in a star-shaped arrangement. The species is found along the Black Sea coast near the Turkish–Georgian border. Hypericum bupleuroides has a small distribution and specific habitat requirements that make it vulnerable to environmental pressures.

The species has a wide array of constituent chemicals, especially in its petals. These include essential oils and secondary metabolites that are common to the genus Hypericum like hypericin, hyperforin, and various phenols. It also has a greater concentration of some compounds than the type species of the genus, Hypericum perforatum, including chlorogenic acid and amentoflavone.

Hypericum bupleuroides was first fully described by Boris Stefanoff in 1932. It is the sole member of the section Bupleuroides, to which it was assigned by Norman Robson in his monograph of the genus Hypericum. It was previously thought to be most closely related to the Chinese species Hypericum elatoides, but more recent phylogenetic studies have demonstrated it has a much closer relationship to section Androsaemum and Hypericum canariense.