The type specimen was collected from Yok Đôn National Park (Đắk Lắk province) at an altitude of about 760 m (2,490 ft).

[2] Diorygma archeri has a flat thallus that is usually white or grayish-green in color and up to 800 μm thick.

[2] The fruiting bodies of the lichen, called ascomata, are numerous and can vary in shape, with some being short and curved while others are more branched.

[2] Diorygma archeri contains protocetraric acid, a lichen product that can be detected using thin-layer chromatography.

Specifically, D. archeri has a thick, distinctly corticate body that is grayish-green in color and contains a well-developed medulla.