Comparative flower morphology in Hippeastrum striatum (Lam.) H.E. Moore. (Amaryllidaceae)


O. Fishchuk

We studied the structure of the flowers of the Hippeastrum striatum. The morphometric parameters, morphology, anatomy, and vascular anatomy of the ovary and the flower are generally described. We registered that the following structural zones are present in the Hippeastrum striatum gynoecium: synascidiate, symplicate, hemisymplicate, and implicate vertical zones. Septal nectaries appear in the symplicate zone and extend to the ovary's entire height, and have a height of about 3280 μm. The peduncle of H. striatum contains 26 large and small vascular bundles. The trace of the ovules is single-bundle. Traces of the inner tepals comprise 20 vascular bundles, traces of the outer tepals comprise 28 vascular bundles. Traces of stamens are single-bundle; it branch out from traces of tepals.

Keywords: Hippeastrum striatum, flower morphology, vertical zones, gynoecium, ovary



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