Galium, (Jordan) Gren.

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 University Press : 21

Sect. Aparinoides (Jordan) Gren. Perennial herbs with slender creeping rhizomes. Stems 4-angled, usually more orless retrorsely aculeolate, never with patent hairs. Leaves usually in whorls of 4-6, 1 -veined, more or less rounded or obtuse, without a hyaline point, usually blackish when dry. Inflorescence cylindrical to broadly pyramidal; partial inflorescences cymose, 1 - to many-flowered, the ultimate branches usually ebracteate. Corolla 3- to 4-merous, shallowly infundibuliform, white, pink or greenish; lobes acute, not appendiculate. Fruit globose, dry, smooth to verrucose or tuberculate, never with hooked setae or hairs.