How to Describe a Pollen Grain

The minimal features for describing a pollen grain are:

size, shape, aperture condition, ornamentation, and the method, how the pollen grain was prepared for LM and EM, respectively.

LM- and SEM-diagnosis may be different from each other, due to the methods and techniques used.

LM-diagnosis plant name: Centaurea jacea (Asteraceae)

method: pollen grains acetolyzed size: medium (longest axis about 40 |_im]

shape (determined by equatorial and polar view]: prolate aperture: tricolporate

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