XVI International Botanical Congess

On the taxonomy of genus Avena L. Based on the oats literature and on the evaluation of species VIR world collection of under different methods were confirmed the genus can be divided into subsections of section Euavena: Aristulatae and Denticulatae. A. macrostachya belongs to section Avenastrum. Aristulatae includes A. clauda, A. pilosa (series Iqualiglumis), A. longiglumis, A. prostrata, A. damascena (series Stipitatae), A. wiestii, A. hirtula, A. atlantica and A. strigosa (series Ibericae), A. barbata, A. vaviloviana and A. abyssinica (series Eubarbatae). Denticulatae includes A. bruhnsiana, A. ventricosa, A. canariensis, A. agadiriana, A. magna, A. murphyi, A. insularis, A. fatua, A. occidentalis, A. sterilis, A. ludoviciana and A. byzantina, A. sativa. It is suggested that the evolutionary pathway of series Iqualiglumis, Stipitatae, species A. strigosa and A. abyssinica reached their evolutionary climax. On the basis of detailed morphology and distribution we concluded that Denticulatae were involved in the evolution of hexaploids.