On the cover Meaningful Colors. Golden and blue fluorescence of berberine stained stem leaves and paraphyllia of Thuidium tamariscinum (Hedw.) Br. Eur. differentiates unipapillose cells of the leaf blade from those building up the nerves. [Author: Magdalena Turzańska]

On the cover we present new ASBP logo, a symbol of our journal activity, publishing continuously the results of research. It pertains to indeterminate growth of the plant apical meristem producing lateral organ primordia in a regular sequence. The primordia layout is unique. It is rarely observed in nature transient state between two consecutive expressions of the main Fibonacci phyllotaxis.