Embryological analysis of Aphanes arvensis L. [Rosaceae]

The paper deals with the embryology of Aphanes arvensis L. and refers to plant material from Poland. Examination of various developmental stages revealed most characteristic features of sexual reproduction. Only a few ovules showed a tendency to elementary apomictic processes in the form of sporadically observed initial cells or young aposporous embryo sacs. The apomictic processes were not continued, but there is reason to believe they could be completed in some ovules. The results are discussed in a taxonomic context.