It produces reddish orange, lobed, gelatinous basidiocarps (fruit bodies) and is parasitic on other fungi on dead branches of broad-leaved trees.

Tremella rubromaculata was first published in 1964 by American mycologist Bernard Lowy based on a collection made in Guatemala.

Fruit bodies are gelatinous, bright reddish orange, up to 2.5 cm (1 in) across, and lobed.

Microscopically, the basidia are tremelloid (ellipsoid, with oblique to vertical septa), 4-celled, 17 to 21 by 8 to 11 μm.

[3] Tremella rubromaculata is a parasite on lignicolous fungi, but its host species is unknown.