Habitat and Ecology
Dentipellis fragilis is a resupinate species with long straight spines forming long patches on the underside of logs. It is a saprobe of heavily decayed deciduous trees and it causes white-rot. It prefers moist and shady growth sites, such as the undersides of large fallen trunks. A characteristic environment is a luxuriant thicket or grass-herb forest, and the species is slightly hemerophilous. D. fragilis strongly favours the trees of the genera Fagus and Quercus, and its occurrence on other frondose trees, such as Carpinus, Tilia, Acer, Alnus and Populus tremula, appear to be rather sporadic.
In N. Macedonia, the species has been observed on old beech trunks (Fagus sylvatica), and there is a single case on Acer pseudoplatanus. Nearly all data are derived from old beech trunks where the species grows as a saprobe triggering a white-rot. Beech forests are found in all mountains in N. Macedonia, and they develop in the height belt of 1,100-1,650 m above sea level. Almost all data originate from heights above 1,000 m. It is only in Stogovo Mt that Dentipellis fragilis has been collected from a fallen trunk of Acer pseudoplatanus, in mixed woods of Alnus, Corylus and Acer pseudoplatanus.