| Hypericum sect. Adenotrias | |
|---|---|
| |
| Hypericum aegypticum, the most common species in the section | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Malpighiales |
| Family: | Hypericaceae |
| Genus: | Hypericum |
| Section: | Hypericum sect. Adenotrias (Jaub. & Spach) R. Keller |
| Type species | |
| Hypericum russeggeri (Fenzl) R. Keller
| |
| Species | |
| |
Adenotrias is a section of flowering plants in the family Hypericaceae. It is made up of Hypericum aciferum, H. aegypticum, and H. russeggeri (its type species). When it was first described, it was considered its own independent genus, but was later placed under Hypericum and demoted to a section. Its Latin name Adenotrias is made of the Greek prefix adeno- (referring to glands) and the Latin word trias (meaning three or a triad). Species in the section are shrubs up to 2 metres (6.6 ft) tall with smooth leaves and bark, and are the only species in Hypericum with heterostylous flowers. They are found around the Mediterranean coast, with H. aciferum restricted to the island of Crete and H. russeggeri present only in parts of Turkey and Syria. Plants of the section have a habitat among limestone and other calcareous rocks. While H. aegypticum has a wide and generally secure distribution, H. aciferum was evaluated as endangered several times since the 1980s, although it is now considered only vulnerable because it is protected in part by a plant micro-reserve near Agia Roumeli.