About the asymmetry structure of the leaf blade Common plantainSergey G. Baranov, Igor E. Zykov, Tatyana S. Biryukova, Lubov V. Fedorova and Alla M. AntsyshkinaE3S Web Conf., 262 (2021) 04004DOI: https://doi.org/10.1051/e3sconf/202126204004