Inosperma adaequatum, known as Inocybe adaequata until 2019, is a species of fungus in the family Inocybaceae found in North America and Europe.

Inosperma is a genus of gilled mushroom in the family Inocybaceae. Previously defined as a subgenus within the large genus Inocybe by Robert Kühner in 1980, these fungi were found to be more distantly