| Pedunculate calyciform growth form of this species, with a folded wall. The atrium is greatly expanded, comprising the inner side of the cormus. The edge of the folded wall corresponds to the oscular margin. |
| Choanosomal skeleton articulated, with rows of tubar triactines and the unpaired ray of subatrial sagittal triactines. Atrial skeleton of paired rays of subatrial triactines and a tangential layer of choanosomal triactines an tetractines. |
| Ectosomal skeleton a tangential layer of triactines, with tufts of micro-diactines projecting beyond surface. The edge of the folded wall (=osculum) has large diactines with a sharp pointed end pointing inwards and a blunt end pointing to or protruding the edge. |
| Large diactines of the edge of the folded wall (=osculum): blunt, clubshaped tip and one sharp tip, cortical triactines, tubar triactines, subatrial triactines, atrial triactines and tetractines. |
| Microdiactines as tufts on the outer side of the sponge wall. |
