Abstract
An indirect procedure for the scanning electron microscopy of living complex shoot structures, e.g., an inflorescence tip, employs the polymerization of a dental impression plastic. Application of the plastic to exposed surfaces during prolonged dissection minimizes desiccation. The resulting complex mould is everted so that recesses representing surface detail can be filled with molten epoxy polymer. The mould is then allowed to revert to its original configuration; it is now filled with epoxy. After the epoxy hardens, the resulting cast is sputter-coated and imaged. Intricate structures up to 1 mm in dimension can be imaged with all components, e.g., flowers on an inflorescence, in situ.
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