Fungi which do not open up to let their spores be dispersed in the air, but which show a clear morphological relation to agarics or boletes, constitute an intermediate form and are called secotioid.
In the following years numerous secotioid species were added to this genus, including ones which according to modern taxonomy belong to other genera or families.
According to a current classification system, Hebeloma now belongs to family Hymenogastraceae, and is considered more narrowly related to the closed Hymenogaster fungi than, for instance, to the ordinary mushrooms in genus Cortinarius.
[7][8] A similar case is the well-known "Deceiver" mushroom Laccaria laccata which is now classified in the Hydnangiaceae, Hydnangium being a gastroid genus.
Pholiota nubigena is a secotioid species found early in the year at high altitude in the western United States.