Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Mycenaceae
Genus: Favolaschia
Species: F. pustulosa
Binominal name: Favolaschia pustulosa
Synonyms: Favolus pustulosus, Laschia pustulosa, Favolus hepaticus, Favolus intestinalis, Favolaschia intestinalis, Favolus niger
Common name: White pore fungi

Favolaschia pustulosa is one of four species of Favolaschia found in New Zealand. There are three indigenous species, F. pustulosa (it also naturally occurs in Queensland, Australia), F. cyatheae and F. austrocyatheae. The fourth species F. calocera is native to Madagascar, southern China, and Thailand and was introduced to New Zealand.

Favolaschia pustulosa is a small, translucent-white pore fungus with a >40 mm flabby, sometimes irregular cap. It has a jelly-like honeycomb of wide angular pores on the underside. It lacks a stalk and it is attached to the substrate by the edge of its cap. It grows on a wood substrate in native forests. Its usual hosts are Beilschmieda tawa, Pseudopanax species, Rhopalostylis sapida and others trees. It can occur singularly or in small or large groups and are usually found from November to June.

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The undersurface.
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Juvenile caps.
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Thanks to Wikipedia for text and information: https://creativecommons.org/licenses/by-sa/3.0/