Not common here – a southern crust – but recently found several times in southern New York and northern New Jersey


•“CORTICOID FUNGI ARE BASIDIOMYCETES with effused basidiomata, a smooth, merulioid or hydnoid hymenophore, and holobasidia. These fungi used to be classified as a single family, Corticiaceae…..”
•Karl Henrik-Larsson
In other words, CRUST FUNGI are largely spreads on wood, either tightly attached to the woods or with the edges turning up or out. They can be seen, for the most part, as either SMOOTH, MERULIOID (or Triple-like) or HYDNOID (Toothed). Another group are referred to as STERIOID FUNGI (mostly species of Stereum). Some Crust Fungi are  brightly colored – pink, orange, yellow, blue, or brown or white. Many can be found year-round. What we call the Crust Fungi are the least known of all the mushrooms we see on our walks in parks and woods. There are over 100 different Crust and Parchment Fungi in our local woods. Learning just 25 or so would be a great leap forward in our understanding of our local woods and how our mushrooms network within them…….

Read this free online article on the NAMA website……Google: Corticoid Fungi of North America…….The article is entitled: “Where are the Corticioid Fungi in North America,” by Dimitrios Floudas.


21 CRUST FUNGI ILLUSTRATED HERE………….mostly very common and often abundant in our woods

Botryobasidium aereum

Byssocorticium atrovirens

Corticium roseum 

Hydnochaete olivacea

Hymenochaete agglutinata

Hyphodontia (Peniophora) sambuci

Peniophora albobadia

Peniophora cinerea

Peniophora incarnata

Phanerochaete chrysorhiza

Phlebia incarnata (in Audubon Guide as Merulius incarnatus)

Phlebia radiata

Phlebia tremellosa (in Audubon Guide as Merulius tremellosus)

Punctularia strigosozonata

Sarcodontia setosa

Steccherinum ochraceum

Stereum gausapatum

Stereum hirsutum

Stereum ostrea

Terana caerulea (in Audubon Guide as Pulcherricium caeruleum)

Xylobolus frustulatus


 PENIOPHORA ALBOBADIA (GIRAFFE SPOTS)…..dark velvety brown crust with a white border (ubiquitous)



PENIOPHORA CINEREA…..gray to gray-pink smooth crust – almost ubiquitous



CORTICIUM ROSEUM (PINK CRUST)…..Pink, smooth crust on wood – everywhere looked for…..



BOTRYOBASIDIUM AEREUM (FUZZY WUZZY CRUST FUNGUS)……a common fuzzy rusty brown crust 

botryobasidium 12


BYSSOCORTICIUM ATROVIRENS (PALE BLUE CRUST)…..thin, pale blue spread on wood

Byssocorticium atrovirens


HYMENOCHAETE AGGLUTINATA (GLUE CRUST)…..always seen as gluing two pieces of wood together!

hymenochaete agglutinata


HYPHODONTIA (PENIOPHORA) SAMBUCI (WHITE PAINT CRUST)…..the only white paint crust (unless it is white paint)

Peniophora sambuci ? SI


PENIOPHORA INCARNATA (ORANGE-PINK BUMPY CRUST)…..a pinkish reddish-orange bumpy crusty spread on wood



PHANEROCHAETE CHRYSORHIZA (ORANGE CORD CRUST)…..easily recognized by its bright orange cords

phanerochaete Phanerochaete5


PHLEBIA RADIATA (RADIAL TRIPE CRUST)…..a pinkish orange radiating waxlike crust



PUNCTULARIA STRIGOSOZONATA (TREE BACON)…..looks like a Trametes on top but turned over it reveals its bumpy hymenium



PHLEBIA INCARNATA (PINK TRIPE CRUST)…..always found growing amidst Stereum ostrea on wood – distinctively pink with merulioid hymenium

phlebia incarnata – Version 3


phlebia incarnata – Version 2


PHLEBIA TREMELOSA (TREMBLING PHLEBIA)…..easy to spot with white caps and orange merulioid hymenium

-phlebia - Version 4


SARCODONTIA SETOSA (YELLOW REDDENING TOOTHED CRUST)…..very common toothed orange crust, brushing red



STECCHERINUM OCHRACEUM (ORANGE TOOTH CRUST)…..common toothed orange crust with white border



HYDNOCHAETE OLIVACEA (TOOTHED OAK CRUST)…..wherever oak is found – on every foray – toothed, brownish crust



STEREUM HIRSUTUM (Tremella’s Lunchbox)…..a smooth yellow hymenium, a very common parchment, often with Tremella growing on it



STEREUM OSTREA (FALSE TURKEY TAIL)…..looking like Turkey Tail (Trametes versicolor) until you turn it over to reveal its smooth underside (hymenium).



STEREUM GAUSAPATUM (BLEEDING PARCHMENT FUNGUS)……looking like other Stereums but “bleeding” red when torn – always on hardwood



XYLOBOLUS FRUSTULATUS (CERAMIC TILE FUNGUS)…..ubiquitous, favoring the ends of cut logs, but growing along them as well. Looking remarkably like ceramic tiles.

xylobolus frustulatus