Galium album subsp. prusense

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 : 24

(c) Subsp. prusense (C. Koch) Ehrend. & Krendl, Bot. Jour. Linn. Soc. 68: 270 (1974)

( G. prusense C. Koch ):

Stems up to 80 cm, glabrous or hairy, erect, the non-flowering branches short. Leaves 10-25 x 2-5 mm, oblanceolate to lanceolate, gradually narrowed towards apex, usually coriaceous. Inflorescence oblong, narrow, dense. Corolla yellowish. 2л = 44. S.E. Europe. G. album is very polymorphic in S.E. Europe, and many taxa have been described from Ukraine; it seems doubtful at present whether any of these can be maintained as species or even subspecies.

For hybrids with 26, cf. 27.