[2][3] This dirty pale yellow to beige sponge has a flattened, cavernous, bushy form.

The surface rough with a conspicuous easily-detached translucent membrane (ectosome) overlying the fibrous projections.

[3] Source:[3] The skeleton is made up of a network of styles forming polyspicular fibers that reach to the surface, running below the ectosome and branching to form narrower fibers.

Type II diancistras and sigmata are scattered throughout the sponge.

[3] The fibrous sponge occurs the southern and western coasts of South Africa, off the coast of Namibia and off southeast South America, at Río de la Plata.