🔍Thallus: Relatively thick, orbicular (rounded), up to 2–3.5 cm in diameter, compact, deeply lobed or polyphyllous.
Lobes: 1–3 mm in diameter, flat or concave, sometimes slightly convex, 0.5–1 mm thick.
🔎Upper surface: Whitish, pale greenish, yellow, or light gray; smooth or convex, with colored or often partially blackened margins.
Apothecia: Marginal or submarginal, often numerous and grouped together, 0.8–2.5 mm in diameter, sessile (without a stalk), compressed at the base, ranging from flat to convex, reddish, yellow, or orange, and brittle.
🔎Lower surface: Pale, brown, bluish, or black, without rhizines (root-like structures).
The medulla is white.
📌Primarily grows in acidic or alkaline environments—on hard, siliceous rocks, cliffs, sandstones, and occasionally on limestone formations.