Taxonomy: Fam. Clusiaceae// Genus: Hypericum// Species: Hypericum tetrapterum Fr. The classification is given according to The Euro+Med PlantBase (Marhold, 2011+).
According to literature data by Micevski in Micevski (1995) and Robson in Tutin et al. (1968), the sepals are without or with 1 – 2 black dots (glands). This trait seems to be of variable expression in the Osogovo region.
Lifeform: Perennial; Hemicryptophyte according to the Raunkiær system.
Distribution: Native from Europe to Caucasus, Mediterranean to Iran according to the distribution information by the Plants of the World Online portal (Royal Botanic Gardens, Kew).
Habitat: Wet habitats- on the banks of rivers, streams and other wet/ damp places.
Flowering period: Summer: JUL, AUG.
Hypericum tetrapterum – habit. Osogovo, “Shtalkovichka” River near village of Shtalkovica, 15.07.2021. Photo by Trajche Dimitrovski.Hypericum tetrapterum – habit. Osogovo, “Shtalkovichka” River near village of Shtalkovica, 15.07.2021. Photo by Trajche Dimitrovski.Hypericum tetrapterum – inflorescence. Osogovo, “Shtalkovichka” River near village of Shtalkovica, 15.07.2021. Photo by Trajche Dimitrovski.Hypericum tetrapterum – inflorescnece. Osogovo, “Shtalkovichka” River near village of Shtalkovica, 15.07.2021. Photo by Trajche Dimitrovski.Hypericum tetrapterum – inflorescence. Osogovo, “Shtalkovichka” River near village of Shtalkovica, 15.07.2021. Photo by Trajche Dimitrovski.Hypericum tetrapterum – flower and flower buds. Osogovo, “Shtalkovichka” River near village of Shtalkovica, 15.07.2021. Photo by Trajche Dimitrovski.Hypericum tetrapterum – flowers. Osogovo, “Shtalkovichka” River near village of Shtalkovica, 15.07.2021. Photo by Trajche Dimitrovski.Hypericum tetrapterum – fruiting inflorescence. Osogovo, “Shtalkovichka” River near village of Shtalkovica, 15.07.2021. Photo by Trajche Dimitrovski.Hypericum tetrapterum – adaxial side of leaves. Osogovo, “Shtalkovichka” River near village of Shtalkovica, 15.07.2021. Photo by Trajche Dimitrovski.Hypericum tetrapterum – stem with cauline leaves. Osogovo, “Shtalkovichka” River near village of Shtalkovica, 15.07.2021. Photo by Trajche Dimitrovski.Hypericum tetrapterum – abaxial side of leaf. Osogovo, “Shtalkovichka” River near village of Shtalkovica, 15.07.2021. Photo by Trajche Dimitrovski.Hypericum tetrapterum – abaxial side of leaf. Osogovo, “Shtalkovichka” River near village of Shtalkovica, 15.07.2021. Photo by Trajche Dimitrovski.Hypericum tetrapterum – wings of stems. Osogovo, “Shtalkovichka” River near village of Shtalkovica, 15.07.2021. Photo by Trajche Dimitrovski.Hypericum tetrapterum – wings of stems. Osogovo, “Shtalkovichka” River near village of Shtalkovica, 15.07.2021. Photo by Trajche Dimitrovski.
References:
Hypericum L. (Incl. Elodes Adanson and Triadenia Spach). Robson, N.K.B. in Tutin, T.G., Heywood, V.H., Burges, N.A., Moore, D.M., Valentine, D.H., Walters, S.M., & Webb, D.A. (1968). Flora Europaea. Volume 2. Rosaceae to Umbelliferae. Cambridge: Cambridge University Press, pp. 261 – 269.
Hypericum L. Micevski, K. (1995). The Flora of the Republic of Macedonia Vol. I, Book 3. Macedonian Academy of Sciences and Arts, pp. 484 – 501.
