''Fulvifomes robiniae'', commonly called the cracked cap polypore, is a fungus of the family of

Hymenochaetaceae The ''Hymenochaetaceae'' are a family (biology), family of fungi in the order Hymenochaetales. The family contains several species that are implicated in many diseases of broad-leaved and coniferous trees, causing heart rot, canker and root disea ...

. The fungus primarily infests black locusts, aided by openings caused by '' Megacyllene robiniae'' infestation, but also grows on various other trees such as '' Carya'',

oak An oak is a hardwood tree or shrub in the genus ''Quercus'' of the beech family. They have spirally arranged leaves, often with lobed edges, and a nut called an acorn, borne within a cup. The genus is widely distributed in the Northern Hemisp ...

, and ''

Acacia ''Acacia'', commonly known as wattles or acacias, is a genus of about of shrubs and trees in the subfamily Mimosoideae of the pea family Fabaceae. Initially, it comprised a group of plant species native to Africa, South America, and Austral ...

''. Cracked cap polypore is

sympatric In biology, two closely related species or populations are considered sympatric when they exist in the same geographic area and thus frequently encounter each other. An initially interbreeding population that splits into two or more distinct spe ...

with most of its hosts. It has a brown spore print, leaving brown streaks on the tree below the fungus. The species was formerly considered part of the genus '' Phellinus'', but was moved to the genus ''Fulvifomes'' when that genus was resurrected based on morphological and molecular phylogenetic evidence.

References

{{Taxonbar, from=Q10626877 Fungal tree pathogens and diseases Fungi of Europe Fungi of Asia Fungi of North America Fungi described in 1903 robiniae Fungus species