Due to morphological similarities, the author initially suggested a close relationship to the terricolous North American species Aspicilia californica and A. filiformis.

This species is named in honour of Reza Mansouri, an Iranian physicist who has made significant contributions to the development of science in Iran.

[4] The thallus of Circinaria mansourii is terricolous, growing on soil or plant debris and forming small patches up to 3–5 cm (1.2–2.0 in) wide.

Secondary chemistry includes aspicilin and an unknown fatty acid, and the thallus displays negative reactions to K, C, and P chemical spot tests in both medulla and cortex.

[3] It is one of the dominant lichen species in the biological soil crust communities of the arid ecosystems of the Iranian Artemisia steppes.