Roccella albida is a species of saxicolous (rock-dwelling), fruticose lichen in the family Roccellaceae.

The lichen is characterised by its distinctively shaped, cylindrical or slightly depressed branches that vary in length from 5 to 20 cm and are white to white-greyish in colour, with infrequent soredia.

The lichen has a cottony medulla, commonly white or sometimes pale yellowish-brown, and has frequent ascomata (fruiting bodies) with wavy margins.

[2] Roccella albida has a distinctively shaped thallus, which forms branches that are terete (cylindrical and smooth) or slightly foveate (marked with small depressions).

[2] Chemical spot tests yield negative results for the medulla with both potassium hydroxide (K) and calcium hypochlorite (C), indicated as K− and C−, respectively.