Laeticorticium Donk (1956) Corticium is a genus of fungi in the family Corticiaceae.

Basidiocarps (fruit bodies) are effused, corticioid, smooth, and grow on dead wood.

The genus Corticium was established by Persoon in 1794 for fungi having smooth, effused fruit bodies.

Though a number of genera had been recognized as distinct from Corticium from the late nineteenth century onwards, it was not until Swedish mycologist John Eriksson reviewed the corticioid fungi in a series of publications starting in 1950[4][5] that modern concepts were formed.

Molecular research, based on cladistic analysis of DNA sequences, has shown that Corticium is a natural (monophyletic) taxon, but that not all species previously considered to belong within the genus (in its strict sense) are closely related.