Micromorphology of the flower of Zephyranthes lindleyana (Amaryllidaceae)

The integration of molecular phylogenetic data and evolutionary comparative morphology of a flower is a promising direction for the construction of a modern evolutionary system of orders, families, subfamilies and genera. The study of vascular anatomy and micromorphology of monocotyledonous flowers is a current way in the study of evolutionary morphology (Skrypec and Odintsova 2020; Fishchuk and Odintsova 2017). The object of our study was selected Z. lindleyana, which is widely grown as an ornamental flowering plant. Genus Zephyranthes Herb. belongs to the subtribe Hippeastrinae Walp tribes Hippeastreae Sweet., subfamily Amaryllidoideae s.s., family Amaryllidaceae (Chase et al. 2016). The alkaloids study of Zephyranthes is presented (Centeno‐Betanzos et al. 2021), the endosperm development and the variations of structures of embryo sacs was studied (Chengqi 2019). The purpose of our study is to clarify the features of floral morphology and internal gynoecium structure, the structure of septal nectaries and to determine the vertical zonality of gynoecium in family members of the family Amaryllidaceae.