B. rufus was the lichen representing genus Baeomyces whose DNA was sequenced for comparison with B. roseus/D.

[5] B. rufus is characterized by bulbous apothecia which may vary from reddish brown to orange to pink, and which become translucent when wet; they may reach a maximum diameter of 2 mm, atop stalks no taller than 6 mm.

[3] It is found in circumpolar North America,[6] Asia,[7] and Europe; it occurs as far south as Turkey.

[9] Typical habitats of B. rufus are temperate pine forests, with moist sites and disturbed ground being particularly preferred.

[6] Specimens may grow directly on soil or leaf litter, or on tree bark or stones.