Hypocreopsis amplectens

Hypocreopsis amplectens is a stromatic fungus in the family Hypocreaceae, notable for its distinctive lobed, hand-like fruiting bodies that spread across the surface of dead wood and bark. Like other members of its genus, it is thought to act as a parasite or associate of other wood-decaying fungi, particularly species of Hymenochaete, rather than decomposing wood directly itself. Its ecological role is tied closely to these host fungi, making it dependent on specific microhabitat conditions within its forest environment.

The species is known only from a small number of sites in eastern Australia, occurring in forest habitat where it grows on fallen branches and decaying timber that retain suitable moisture and bark cover. Its recorded range is highly restricted, and populations are sparsely distributed even within suitable forest tracts.

Its listing as Critically Endangered reflects an extremely limited and fragmented distribution combined with multiple ongoing pressures. Mining and quarrying activity threatens habitat integrity at known sites, while altered fire regimes and fire suppression practices affect the deadwood substrate and forest structure the fungus depends on. Invasive species and problematic native species add further pressure on host organisms and habitat quality, and broader habitat shifting and alteration compound these risks by degrading the specific conditions required for fruiting.

Conservation attention has focused on site protection and habitat monitoring in the areas where the species has been recorded, along with efforts to document its distribution more thoroughly given how little is known about its full range. Because so few populations have been identified, survey work remains a priority for informing future management.

Given its narrow known range, reliance on specific decaying wood substrates, and the combination of ongoing habitat threats, the species' population trend is decreasing, and its long-term outlook remains precarious without sustained habitat protection.