Areolae Areolate

The term areola/areolate was originally applied to pollen grains ornamented with

Acalymmate

Annona muricata Annonaceae tetrad, dry pollen

Drosera sp. Droseraceae tetrad detail of pollen wall

Acalymmate

Annona muricata Annonaceae tetrad, dry pollen

Drosera sp. Droseraceae tetrad detail of pollen wall small, mostly convex exine areas separated by small grooves. Later on, the term was used describing pollen with large, variably ornamented exine areas separated by grooves; this type of ornamentation is better called clypeate, a pollen wall, in which the exine is subdivided into shields. Clypeate, however, a lso denotes a pollen class; for examples see "Illustrated Glossary".

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