Investigation of recent and fossil pollen material often reveals interesting features that in some cases may be misinterpreted. Selected examples are various tripartite surface features that may actually be or only resemble apertures. Other examples are conspicuous, even eye-catching ornamentation features that are potentially misinterpreted as apertures, while the genuine, very inconspicuous apertures might be overlooked. The study of a morphological series can be of help clarifying ambiguous features.
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