MORPHOLOGY AND VASCULAR ANATOMY OF THE FLOWER OF ZEPHYRANTHES CITRINA BAKER. (AMARYLLIDACEAE J. ST.-HIL.)

O. S. Fishchuk

Abstract


In the gynoecium of Zephyranthes citrina Baker. there are synascidiate, symplicate, and hemisymplicate vertical zones. The longest zone is the fertile hemisymplicate zone and the shortest one is the sterile synascidiate zone in the ovary. It was determined that in Z. citrina the peduncle consists of 12 vascular bundles, which gather above the center in a dense circle, but do not form a vascular cylinder, and at the level of receptacle septal vascular bundles and dorsal vascular bundles depart, from which above traces of tepal depart. Dorsal and septal vascular bundles of the carpel are two-bundle. In the center of the ovary at the level of the locules there is a glandular slit which points to the presence of a symplicate zone and a circle of small vascular bundles – the roots of the ventral complex. Higher these bundles are reorganized into 6 massive vascular bundles and supplied the ovules – the ventral bundles of carpels. There are 14-20 ovules in each locul, the trace of the ovule is one-bundle. Traces of outer tepals have 12 vascular bundles, traces of inner tepals have 10 vascular bundles. Traces of stamens are single- bundle.

Keywords


Zephyranthes citrina; gynoecium; flower morphology; vascular anatomy

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DOI: https://doi.org/10.25128/2078-2357.21.4.2

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