Specific ecology (ombrotrophic bogs, not or slightly disturbed), threatened habitat in Western Europe. Populations scattered.
Populations usually small and restricted to small sites (< 10 ha), scattered in favourable sites, fruiting once (rarely twice) a year. Localities stable.
Population Trend: Decreasing
Holec, J. et al. 2014. Habitat preferences of Pholiota henningsii (Fungi, Strophariaceae), rare species of relict mires. Nova Hedwigia 98(1-2): 51-77.