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Introduction to the key use You will use a dichotomous key That means that you will have to answer several questions before reaching the determination of a taxon. At each step you will see two proposals : you must select the one that best matches the characteristics of the grain that you are observing . If you hesitate between the two proposals, test one, then go back to test the other.When you arrive at a solution (i.e. the name of the genus, of the family or of the order), pictures will be displayed , as well as a summary of the main characteristics of the grain. You will be enabled to compare them with the grain that you are observing. This key was voluntarily simplified. It only takes into account the taxa used in the Palyno software, the most abundant generally found in the High-Ardenne area . There are many other pollens and spores which can resemble those presented in this key.
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