 Although "Sidera" is placed in a different order (Hymenochaetales), it shares many characteristic features with "Skeletocutis", including whitish resupinate basidiocarps (in many species) with small pores, and narrow skeletal hyphae.In contrast with "Skeletocutis", however, the hyphae in "Sidera" comprising the dissepiment edge are smooth or covered with only a few faceted crystal clusters.In 1963, Polish mycologist Stanislaw Domanski circumscribed the genus "Incrustoporia" (typified by "Poria stellae") to contain several polypores featuring encrusted hyphae at the dissepiments.