Galium elongatum, C. Presi

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

17. G. elongatum C. Presi in J. & C. Presi, Del. Prag. 119 (1822).

Stems (40-)50-100(-150) cm, stout, weak and diffuse, retrorsely aculeolate on the whitish angles. Middle cauline leaves (15-)20-35(-50)x(2-)2-5-5(-7) mm, in whorls of 4-6, broadlyoblong-oblanceolate, usually rough on margin and midrib. Inflorescence broadly and interruptedly pyramidal; pedicels (3-)4-5-5 mm, elongating after anthesis, divaricate in fruit. Flowers (3-)4-merous; corolla 3-4(-4-5) mm in diameter. Fruit 2-5-3-5 mm, smooth to more or less tuberculate. 2л = 96, 144. Wet places. Most of Europe, eastwards to Finland, W. Ukraine and Turkey. All except Fa Is Rs (N,?B,?C, E) Sb.