Substrate: acidic soil (mostly on siliceous substrata)
Altitudinal distribution: submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus)
Note: this taxon was originally segregated from D. gypsaceus on account of its different ecology (it grows on neutral sandy to clay soil) and the amyloid reaction of the medulla, a character which is not always evident; it grows on subneutral sandy soils in the western Mediterranean region, including the base of the SW Alps.
