Orange Pore Fungus

AT A GLANCE
Common Name: Orange Pore Fungus
Scientific Name: Favolaschia calocera
Category: Fungi
Subcategory: Bracket & Pore Fungi
Size: Cap diameter 5 to 20 mm (0.2 to 0.8 in); delicate lateral stem 5 to 15 mm long
Weight: 0.5 to 2.0 g per fruiting body
Lifespan: Fruiting body lasts 4 to 8 days; mycelium lives in deadwood
Diet: Saprotrophic wood decomposer (breaking down lignin and cellulose in dead branches)
Habitat: Damp rainforest floors, rotting fallen logs, and dead broadleaf branches
Range: Madagascar, Australasia, and southern Europe
Conservation Status: Least Concern (IUCN Red List)

Overview

The Orange Pore Fungus (Favolaschia calocera), also celebrated as the Orange Ping-Pong Bat Mushroom, is an enchanting, luminous wood-decay fungus native to the ancient rainforests of Madagascar. Growing in cheerful colonies on rotting forest logs, this miniature jewel resembles a tiny, glowing orange Ping-Pong paddle with an underside perforated by a breathtaking, geometric honeycomb of bright yellow-orange pores.

Biology and Physical Characteristics

Favolaschia calocera produces a delicate, translucent fan- or kidney-shaped cap colored brilliant flame-orange, saffron, or glowing apricot. The upper surface is smooth to finely gelatinous, while the underside reveals its most stunning trademark: a regular, architectural network of large, open polygonal pores resembling a glowing honeybee comb. The slender, lateral curved stipe attaches directly to the wood substrate.

Behavior and Ecology

A vigorous saprotrophic decomposer, the Orange Pore Fungus colonizes fallen dead branches and rotting logs in humid, moss-carpeted forest hollows following warm rains. It rapidly digests cellulose and lignin, returning vital organic nutrients to the woodland soil. In Australasia, its aggressive colonization of dead timber has raised ecological interest regarding its competition with native wood-decay fungi.

Conservation and Human Impact

Classified as Least Concern by the IUCN, Favolaschia calocera is exceptionally prolific. Its vivid flame-orange coloration, translucent gelatinous texture, and striking geometric honeycomb pores make it one of the most photographed and beloved macrofungi among naturalists and macro-photographers worldwide.

Interesting Factoid

The underside of the Orange Pore Fungus looks exactly like a miniature honeycomb: its pores are so large and geometrically perfect that from below it resembles a glowing orange wasp nest made of gelatin.