Comparative flower morphology in Hymenocallis littoralis (Jacq.) Salisb. (AmaryllidaceaeJ.St.-Hil.)
DOI:
https://doi.org/10.29038/NCBio.21.1.32-37Keywords:
Hymenocallis littoralis, morphology, vascular anatomy, ovary, vertical zones, vascularbundleAbstract
The morphological structure and vascular anatomy of the flower of Hymenocallis littoralis were studied. New morphological features of vertical zonality of gynoecium and vascular anatomy of the flower, which were not previously used in the taxonomy of the family Amaryllidaceae, were revealed. Micromorphological prepa-rations of 10 flowers of Hymenocallis littoralis were made using standard methods of impregnation of plant material with paraffin and made sections 15–20 μm thick using a rotary microtome. Sections were stained with Safranin and Astra-Blau and glued with Eukitt. We found the presence of two vertical zones in the gynoecium of Hymenocallis littoralis: short symplicate and very long hemisymplicate zones. Micromorphology and vascular anatomy of the flower were studied using transverse sections of flowers. The peduncle of Hymenocallis littoralis has a vascular cylinder at the base, which above gives rise to the dorsal and septal vascular bundles of the carpel, which above unite with the paired ventral bundles of the carpel to form a dorsal vein. The trace of the ovules is single-bundle. Septal and dorsal bundles of the carpel give rise to traces of outer and inner tepals and they give rise traces of stamens. Traces of stamens are single-bundle. Traces of dorsal and septal bundles of the carpel three-bundle The new data helped to deepen the knowledge about the morphology and vascular anatomy of the flower of Hymeno-callis littoralis and will help to compare the obtained morphological and anatomical features with the features pre-viously studied for members of the family Amaryllidaceae for further use in taxonomy.
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