PJB-2019-317
Morpho-anatomical characters of the floral structures of Erythrina × neillii Mabberley & Lorence (Fabaceae) and their importance to species characterization
Salma Khaled Gabr
Abstract
Erythrina (Coral tree, Family Fabaceae) is a worldwide distributed ornamental tree. The flower of Erythrina species has a wide traditional use as a tranquilizer, sedative and in treatment of dysentery and syphilis. Studies on the morphology of this genus is insufficient. Accordingly, this study aims to provide information on the morpho-anatomical characters of the floral parts of E × neillii and their usefulness in distinguishing this hybrid plant from other closely related species. E × neillii flower is characterized by a racemose compound panicle inflorescence, a diadelphous androecium and the superior gynoecium which is monocarpellary with marginal placentation. Besides, epidermal cells are papillosed in all floral leaves showing trichomes of different types, prisms of calcium oxalate and secretory cells or sacs. The mesophyll of different floral parts has red pigments in addition to alkaloidal amorphous content and phenolics. Among the most representative features for E × neillii flowers are the different type of stomata varying between anomocytic and paracytic types in addition to the pollen grains that are rounded to triangular in shape with granular exine.
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