Comparative flower morphology in Cyrtanthus elatus (Amaryllidaceae)

Abstract

O. Fishchuk*

We studied the structure of the flowers of the Cyrtanthus elatus (Jacq.) Traub. The morphometric parameters, morphology, anatomy, and vascular anatomy of the ovary and the flower are generally described. There are three vertical zones present in the C. elatus gynoecium: symplicate, hemisymplicate, and asymplicate vertical zones. Synascidiate zone is absent. Septal nectaries appear in the symplicate zone and have a height of about 1920 μm. C. elatus peduncle contains 20 vascular bundles, which unite above and form a massive vascular cylinder, from which at the level of the receptacle depart traces of dorsal vascular bundles, traces of septal vascular bundles, traces of tepals, which give rise to traces of stamens. In the center of the ovary remains a group of small vascular bundles-the roots of the ventral complex, which above when the locule appear reorganized into 6 massive vascular bundles-the ventral vascular bundles of the carpel, which feed the ovules. The trace of the ovule is single-bundle. Traces of dorsal and septal vascular bundles of the carpel are two-bundle. Above the locules, the ventral vascular bundles of the carpel are merge with the dorsal vascular bundles and form a dorsal vein. There are a lot of ovules, in a section in each locule are 2-3 ovules. Traces of the inner tepals comprise 10 vascular bundles, traces of the outer tepals comprise 15 vascular bundles. Traces of stamens are single-bundle, depart from tepal traces.

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