1877 promoted to a higher-level priest in the Hanover parish
Kummer did a lot of work and published it all in one big book , which performed a tremendously helpful service for taxonomy. Fries had stuck all gilled mushrooms into one big genus, Agaricus. While he had since begun to segregate things out, like Coprinus and Hygrophorus, most of the gilled mushrooms were still in one big blob of a taxon. Kummer took a lot of Fries's sub-generic groups (like Tricholoma, Clitocybe, etc.) and raised them to the level of genera, leaving Agaricus with the restricted sense that it has today. In fact, he (or someone else around this time) restricted Agaricus entirely out of existence - - the taxon we now call Agaricus was called Psalliota for a long time (because everyone was so sick of Agaricus?). But eventually Agaricus made a come-back.