The structure of nectaries in the flowers of Myosotis sylvatica Hoffm. was studied by light microscopy, scanning electron microscopy and transmission electron microscopy. A nectariferous gland of irregular disc shape surrounds the bottom of the four-lobed ovary. From the upper side, both the nectary and the ovary are protected by ligulate folds of a widening corolla tube with epidermis outgrowths. Nectar is secreted by modified stomata situated only on the top and abaxial nectary surface adjoining the corolla tube. Stomata are irregularly distributed, forming aggregates of 2-3 each. On the longitudinal sections of the receptacle, the nectariferous tissue is distinguished by small cells, dense protoplast content, and intercellular spaces of different sizes. Branches of phloem bundles are observed at the base of the nectariferous tissue.
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