Hypericum, Boiss.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1981, Flora Europaea. Volume 2. Rosaceae to Umbelliferae, Cambridge University Press : 267

Sect. Thasia Boiss. Glabrous perennial herbs. Black glands present on stem, leaves, sepals, petals and anthers. Stem 2-lined. Leaves with only intramarginal black glands. Flowers in corymbose cymes. Petals and stamens persistent. Stamen-fascicles 5. Styles 5. Capsule with longitudinal vittae. Seeds reticulate-pitted.