Collybia confluens

Name and identity

The current accepted name is Collybiopsis confluens (Pers.) R.H. Petersen (2021). Collybia confluens is the older catalogue name and remains a searchable synonym, as do Gymnopus confluens and Marasmiellus confluens. The basionym is Agaricus confluens Pers.

Molecular work reports a substantial split between European and North American material, and it describes the North American lineage as a separate subspecies. The intercontinental history is unresolved, and morphology does not readily separate the populations. Records from Asia have not been resolved against that treatment, so a historical record under the old name should not be read as confirmed identity with modern European material.

Food use and its limits

A Purépecha ethnomycological study of the Lake Pátzcuaro basin in Michoacán, Mexico, lists this mushroom among those eaten locally. The authors describe the caps as tough or chewy, and they record boiling followed by frying, or boiling and stewing with oregano, cumin and tomato. This is historical ethnographic evidence of local practice, not a tested safety protocol, and it does not show that boiling removes any toxin.

The FAO wild edible fungi compilation places the name in a food category defined by reported consumption. Its checklist labels, edible for Hong Kong and edible for Malawi, carry no preparation or practice detail. A secondary Spanish field guide calls the species inedible or of little culinary value, while noting that young caps may be eaten. The regional and source-level disagreement means no global edibility claim is supported.

Correct identification matters more than any preparation. Common names are not reliable identifiers, and nothing on this page is an identification guide or a recommendation to forage or eat the fungus.

Habitat, season and places

Secondary European accounts describe clustered fruiting in woodland, especially broadleaf and beech woods, with occasional association with conifers. Most records are in autumn, with some in summer. A North American field account gives July to November. These are regional observations, not a global calendar, and a single season should not be presented as universal.

Mapped places should stay at the level the sources support: the Pátzcuaro basin and Michoacán for the ethnographic record, and country or regional centroids for the Hong Kong and Malawi checklist labels. The Hong Kong and Malawi entries cite older checklist material and add no independent observation.

Images

Five reference photographs are linked from sources that identify their subjects as Collybiopsis confluens or the older synonym Collybia confluens. Those source identifications have not been independently confirmed on this page. The generated hero is an illustrative reconstruction based on published descriptions and source-labelled photographs, not a specimen photograph. These images show source-reported appearance only; they are not an identification guide, a foraging recommendation or evidence that the species is safe to eat.