CANDOLLEA, cilt.78, sa.1, ss.79-87, 2023 (SCI-Expanded)
A new species, Hypericum celikaensis Fırat & Eroğlu, belonging to section Arthrophyllum Jaub. & Spach, is described
and illustrated from Çelikhan/Adıyaman Province, Turkey. The species is similar to H. rupestre Jaub. & Spach and
H. cardiophyllum Boiss. However, it is easily distinguished from H. rupestre by its two-lined stem and the free sepals (at
base) with fewer black glands. It differs from H. cardiophyllum in having sessile black glands on sepals and asymmetrically
retuse petals. In addition, the pollen and the seeds of both H. celikaensis and H. rupestre are characterized. An amended
identification key to the species of Hypericum sect. Arthrophyllum in Turkey is provided, as well as detailed pictures of
living plants.