[2] Dirinaria confluens exhibits a foliose thallus that ranges from loosely appressed to firmly agglutinated.

Conversely, the medulla demonstrates negative reactions to K-, C-, KC-, and P-.

Secondary metabolites present include atranorin in the upper cortex, and divaricatic acid along with a few terpenes in low concentration in the medulla.

[3][4] Dirinaria confluens inhabits various substrates, including bark, wood, and rocks, spanning from sea level to the boundaries of montane rain forests.

[3] The species is distributed across all tropical regions of both hemispheres, with occasional collections noted from subtropical areas of Japan.