| Hypericum formosissimum | |
|---|---|
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Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Malpighiales |
| Family: | Hypericaceae |
| Genus: | Hypericum |
| Section: | Hypericum sect. Adenosepalum |
| Species: | H. formosissimum
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| Binomial name | |
| Hypericum formosissimum | |
| Synonyms | |
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Hypericum formosissimum is a species of flowering plant in the St John's wort family Hypericaceae. Found in the cracks of limestone rocks, it is a small perennial herb that grows in a pillow-like shape, has yellow flower petals, and blooms in the late summer. The plant is rare and has a limited habitat in Turkey, Armenia, and Azerbaijan. It is threatened by rock collapses, urbanization, and road construction; it is not protected by conservation efforts.
The species was first described as Hypericum formosum by Soviet-Armenian botanist Armen Takhtajan and was later excluded from a genus-wide monograph of Hypericum by English botanist Norman Robson. When the species was reviewed by Robson, he was uncertain whether it belonged in section Origanifolia or section Adenosepalum. In a 2013 online publication, Robson placed the species in a Hypericum huber-morathii group within section Adenosepalum alongside several related species.