Crust fungi are fruiting bodies that are broadly attached to the wood substrate. They lie resupinate or flat on the surface and within the dead wood from which they emerge. All crust fungi are not related to each other. They are found in various orders along with very differently shaped close relatives.
Stereums, unlike most polypores, do not have visible pores. Their hymenium or fertile surface is smooth. Stereums belong to the Stereaceae family within the Russulales order. In other words, they are closely related to Lactarius and Russulas.
You can see examples of common crust fungi as well as fairly common species of stereum by clicking on their individual scientific names which are listed alphabetically below.
Chondrostereum purpureum
ANTRODIA____albida,____favescens,____heteromorpha,____radiculosa (See FIBROPORIA), ____variformis (See NEOANTRODIA)
BOTRYOBASIDIUM_____aereum
CHONDROSTEREUM ____purpureum
FIBROPORIA (ANTRODIA)____radiculosa
FUSCOPORIA (PHELLINUS)____ferruginosa
HYDNOPHLEBIA____chrizorhyzon
HYDNOPORIA____corrugata____olivacea____tabacina
LEUCOGYROPHANA____romellii
METULOIDEA____fragrans
NEOANTRODIA (ANTRODIA)____variiformis
PENIOPHORA____albobadia ____cinerea____incarnata ____rufa (See STERELLUM)____subacida
PHELLINUS____ferruginosus (See FUSCOPORIA)
PHLEBIA____radiata____tremellosa
PHLEBIOPSIS____crassa
PSEUDOMERULIUS ____aureus____curtisii
STERELLUM (PENIOPHORA)____rufum (red)
STEREUM (Re: Russula)____sp.____complicatum____gausapatum ____hirsutum _____lobatum, ____ochracea____ochraceoflavum____ostrea____sanguineolentum____striatum____subtomentosm