Taxonomy: Fam. Rubiaceae// Genus: Cruciata// Species: Cruciata glabra (L.) Ehrend.
Determined according to the botanical key provided in Flora Europaea Vol. 4 (Tutin et al., 1976).
Distribution: Central and South Europe to Central Siberia and Caucasus, Nortwest Africa according to the distribution information provided by the Plants of the World Online portal (Royal Botanic Gardens, Kew).
Habitat: European beech forests.
Lifeform: Perennial, hemicryptophyte according to the Raunkiaer system.
Flowering period: Late spring – early summer: MAY, JUN.
References:
Cruciata glabra (L.) Opiz. Plants of the World Online, Royal Botanic Gardens Kew. https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:60456820-2#children [Accessed 30.05.2022].
Tutin, T.G., Heywood, V.H., Burges, N.A., Moore, D.M., Valentine, D.H., Walters, S.M. & Webb, D.A. (1976). Flora Europaea. Volume 4: Plantaginaceae to Compositae (and Rubiaceae). Cambridge: Cambridge University Press.
Osogovo nature 