Taxonomy: Fam. Rubiaceae// Genus: Galium// Species: Galium album Mill.
Determined according to the botanical keys for fam. Rubiaceae and the genus Galium provided by Tutin et al. (1976) in Flora Europaea Vol. 4 and the botanical keys for Galium sect. Leiogalum provided by Ančev and Krendl (2011).
Distribution: Native from Europe to West Siberia and the Mediterranean; Sudan according to the distribution information provided by the Plants of the World Online portal.
Habitat: Among trees, sparse woods, shrubland, clearings of forests from the mountain foot up to the belt of subalpine European beech forests at c. 1600-1650 m altitude.
Lifeform: Perennial, hemicryptophyte according to the Raunkiaer system.
Flowering period: Summer (JUN, JUL, AUG).
References:
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.
Ančev, M. and Krendl, F. (2011). Galium sect. Leiogalium (Rubiaceae) in the Bulgarian flora. Phytologia Balcanica 17(3): 291–314. http://www.bio.bas.bg/~phytolbalcan/PDF/17_3/17_3_05_Anchev_&_Krendl.pdf [Accessed 03.08.2021].
Galium album Mill. Plants of the World Online, Royal Botanic Gardens, Kew. http://www.plantsoftheworldonline.org/taxon/urn:lsid:ipni.org:names:749481-1 [Accessed 03.08.2021].