Top-to disc-shaped annual, with flattened crust-like stem, 2-30 mm diam. Leaves sessile, fused to stem base, obovate to spathulate, dorsiventrally flattened and slightly convex above, 2-5 x 1.5-3 mm, finely papillate above. Flowers sessile, in a central cluster, cup-shaped, petals 1.2-2 mm long, brown to red.
Dwarf, disciform, crustose annual. Leaves partially fused to stem and rosulate, oblanceolate. Flowers sessile in centre, cup-shaped, brownish, petals 0.5-1.0 mm long.