The type specimen was collected by the Norwegian lichenologist Tor Tønsberg in 1981, north of Bjørktjørnane (Nord-Trøndelag, Norway) at an elevation of 210–220 m (690–720 ft); it was found growing on Alnus incana in a south-facing ravine.

[2] The thallus of Biatora toensbergii is effuse, meaning it spreads outwards and can reach up to 4.5 cm (1.8 in) in diameter.

The coloration of the thallus ranges from white to light or medium gray, and it can occasionally have a greenish or brownish tint.

The disc of the apothecia is typically orange to red-brown, rarely light ochre, and is weakly to moderately convex, lacking a powdery coating (epruinose).

The hypothecium, located below the hymenium, is 35–150 μm high and is colorless to pale orange-brown, often with a pinkish hue.

[3] Chemical spot tests on the thallus reveal it is negative for C and K, but positive for P (paraphenylenediamine), which turns orange-red.

[3] This lichen species inhabits coniferous forests, particularly those dominated by fir (Abies) or hemlock (Tsuga) trees, as well as in stands of red alder (Alnus rubra).

Biatora toensbergii is part of the "Trøndelag phytogeographical element", a term coined by Holien and Tønsberg to describe species that are primarily or exclusively found in the humid coastal forests of central Norway.